{"id":2961660,"date":"2026-04-14T21:00:50","date_gmt":"2026-04-15T04:00:50","guid":{"rendered":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=2961660"},"modified":"2026-04-16T09:17:08","modified_gmt":"2026-04-16T16:17:08","slug":"visualizing-fatal-crash-patterns-with-calendar-heat-charts-in-map-viewer","status":"publish","type":"blog","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/visualizing-fatal-crash-patterns-with-calendar-heat-charts-in-map-viewer","title":{"rendered":"Visualizing Fatal Crash Patterns with Calendar Heat Charts in Map Viewer"},"author":134231,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":""},"categories":[22941],"tags":[42641,780999,781056,780302,33371],"industry":[],"product":[36581,36551],"class_list":["post-2961660","blog","type-blog","status-publish","format-standard","hentry","category-mapping","tag-arcgis-online","tag-calendar-heat-chart","tag-car-crash","tag-fars","tag-map-viewer","product-arcgis-living-atlas","product-arcgis-online"],"acf":{"short_description":"Use calendar heat charts in ArcGIS Online Map Viewer to uncover temporal patterns in U.S. fatal motor vehicle crashes.","flexible_content":[{"acf_fc_layout":"content","content":"<p data-start=\"291\" data-end=\"534\">Understanding <em data-start=\"305\" data-end=\"311\">when<\/em> events happen can be just as important as knowing <em data-start=\"362\" data-end=\"369\">where<\/em>. With the introduction of <a href=\"https:\/\/doc.arcgis.com\/en\/arcgis-online\/create-maps\/calendar-heat-chart-mv.htm\" target=\"_blank\" rel=\"noopener\">calendar heat charts<\/a> in ArcGIS Online Map Viewer, it\u2019s now easier than ever to uncover temporal patterns hidden within large datasets.<\/p>\n<p data-start=\"536\" data-end=\"735\">In this blog article, we\u2019ll explore how to use calendar heat charts to analyze fatal vehicle crashes across the United States using the <a href=\"https:\/\/livingatlas.arcgis.com\/en\/browse\/?q=fars#d=2&amp;q=fars\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"664\" data-end=\"709\">Fatality Analysis Reporting System (FARS)<\/strong><\/a> from the National Highway Traffic Safety Administration and provided by Esri in ArcGIS Living Atlas.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2886942,"id":2886942,"title":"FARS_LivingAtlas","filename":"FARS_LivingAtlas.png","filesize":79149,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/07\/FARS_LivingAtlas.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/transportation\/fatality-analysis-reporting-system-in-living-atlas\/fars_livingatlas","alt":"","author":"134231","description":"","caption":"Click this image to open the FARS Fatal Motor Vehicle Crashes 2019 to 2023 layer in a new tab.","name":"fars_livingatlas","status":"inherit","uploaded_to":2885472,"date":"2025-07-09 17:09:24","modified":"2025-07-10 20:44:49","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":708,"height":189,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/07\/FARS_LivingAtlas-213x189.png","thumbnail-width":213,"thumbnail-height":189,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/07\/FARS_LivingAtlas.png","medium-width":464,"medium-height":124,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/07\/FARS_LivingAtlas.png","medium_large-width":708,"medium_large-height":189,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/07\/FARS_LivingAtlas.png","large-width":708,"large-height":189,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/07\/FARS_LivingAtlas.png","1536x1536-width":708,"1536x1536-height":189,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/07\/FARS_LivingAtlas.png","2048x2048-width":708,"2048x2048-height":189,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/07\/FARS_LivingAtlas.png","card_image-width":708,"card_image-height":189,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/07\/FARS_LivingAtlas.png","wide_image-width":708,"wide_image-height":189}},"image_position":"center","orientation":"horizontal","hyperlink":"https:\/\/livingatlas.arcgis.com\/en\/browse\/?q=%22FARS%20Fatal%20Motor%20Vehicle%20Crashes%202019%20to%202023%22#d=2&amp;q=%22FARS+Fatal+Motor+Vehicle+Crashes+2019+to+2023%22&amp;type=layers"},{"acf_fc_layout":"content","content":"<h2 data-section-id=\"18epjnt\" data-start=\"742\" data-end=\"770\"><strong>Why calendar heat charts?<\/strong><\/h2>\n<p data-start=\"772\" data-end=\"956\">Calendar heat charts are designed specifically for temporal analysis. They aggregate incidents into a grid based on calendar units\u2014revealing patterns that might otherwise go unnoticed.<\/p>\n<p data-start=\"958\" data-end=\"972\">For example:<\/p>\n<ul data-start=\"973\" data-end=\"1128\">\n<li data-section-id=\"1qw7i58\" data-start=\"973\" data-end=\"1024\">A <strong data-start=\"977\" data-end=\"990\">yearly view<\/strong> shows patterns by month and day<\/li>\n<li data-section-id=\"1b4o4o9\" data-start=\"1025\" data-end=\"1128\">A <strong data-start=\"1029\" data-end=\"1042\">weekly view<\/strong> reveals trends by day of week and hour of day<\/li>\n<\/ul>\n<p data-start=\"1130\" data-end=\"1309\">Each cell represents an aggregation (like count or sum), allowing you to quickly identify spikes, cycles, and anomalies in time-based data.<\/p>\n<p data-start=\"1311\" data-end=\"1426\">This makes them ideal for analyzing crash data, where timing\u2014weekends, holidays, late nights\/early mornings\u2014plays a critical role.<\/p>\n"},{"acf_fc_layout":"content","content":"<h2 data-section-id=\"vs49pm\" data-start=\"1433\" data-end=\"1475\"><strong>Bringing in FARS data from Living Atlas<\/strong><\/h2>\n<p data-start=\"1477\" data-end=\"1659\">ArcGIS Living Atlas is a curated collection of authoritative geographic content, including ready-to-use layers for analysis and visualization.<\/p>\n<p data-start=\"1661\" data-end=\"1798\">For this workflow, you can use the <a href=\"https:\/\/www.arcgis.com\/home\/item.html?id=988b0ef627f34bca91a06951e1da405f\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"1696\" data-end=\"1718\">FARS Fatal Motor Vehicle Crashes 2019 to 2023 feature layer<\/strong><\/a>, which contains detailed records of fatal motor vehicle crashes across the U.S.<\/p>\n<p data-start=\"1800\" data-end=\"1840\">Typical attributes in FARS data include:<\/p>\n<ul data-start=\"1841\" data-end=\"1925\">\n<li data-section-id=\"14frg3k\" data-start=\"1841\" data-end=\"1867\">Date and time of crash<\/li>\n<li data-section-id=\"1l3cro5\" data-start=\"1868\" data-end=\"1880\">Location<\/li>\n<li data-section-id=\"16cpeoo\" data-start=\"1881\" data-end=\"1905\">Contributing factors<\/li>\n<li data-section-id=\"rnbl0i\" data-start=\"1906\" data-end=\"1925\">Fatality counts<\/li>\n<\/ul>\n"},{"acf_fc_layout":"content","content":"<h2><strong>Building the calendar heat chart<\/strong><\/h2>\n<ol>\n<li>Open the layer in Map Viewer<\/li>\n<li>Click <strong>Charts \u2192 Add chart \u2192 Calendar heat chart<\/strong><\/li>\n<li>Set the <strong>Date field<\/strong> (e.g., crash date\/time)<\/li>\n<li>Choose a calendar type:\n<ul style=\"margin: 0;padding-left: 20px\">\n<li><strong>Week by day of week and hour of day<\/strong>\u00a0for behavioral patterns<\/li>\n<li><strong>Year by month and day of month<\/strong> for seasonal trends<\/li>\n<\/ul>\n<\/li>\n<li>Use <strong>Count<\/strong> as the aggregation (number of fatal crashes)<\/li>\n<\/ol>\n"},{"acf_fc_layout":"content","content":"<h2 data-section-id=\"11pdq03\" data-start=\"2651\" data-end=\"2683\"><strong>What patterns can we uncover?<\/strong><\/h2>\n<p data-start=\"2685\" data-end=\"2757\">Using FARS data with a calendar heat chart can reveal powerful insights:<\/p>\n<h3 data-section-id=\"azmcln\" data-start=\"2759\" data-end=\"2787\">Weekly and hourly trends<\/h3>\n<p data-start=\"2788\" data-end=\"2821\">A <strong data-start=\"2790\" data-end=\"2803\">week view<\/strong> often highlights:<\/p>\n<ul data-start=\"2822\" data-end=\"2939\">\n<li data-section-id=\"1i5wjix\" data-start=\"2822\" data-end=\"2864\">Higher crash frequencies on <strong data-start=\"2852\" data-end=\"2864\">weekends<\/strong><\/li>\n<li data-section-id=\"1es3zzt\" data-start=\"2865\" data-end=\"2900\">Peaks during <strong data-start=\"2880\" data-end=\"2900\">late-night hours<\/strong><\/li>\n<li data-section-id=\"jb208m\" data-start=\"2901\" data-end=\"2939\">Morning and evening commute patterns<\/li>\n<\/ul>\n<p data-start=\"2941\" data-end=\"3027\">These patterns align with known behavioral risks such as impaired driving and fatigue.<\/p>\n<p>&nbsp;<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2961825,"id":2961825,"title":"Weekly Patterns for Fatal Motor Vehicle Crashes (2019-2023)","filename":"Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-2019-2023.png","filesize":57235,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-2019-2023.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/visualizing-fatal-crash-patterns-with-calendar-heat-charts-in-map-viewer\/weekly-patterns-for-fatal-motor-vehicle-crashes-2019-2023","alt":"Calendar heat chart showing the weekly patterns for fatal motor vehicle crashes for 2019 - 2023 in the U.S.","author":"134231","description":"Calendar heat chart showing the weekly patterns for fatal motor vehicle crashes for 2019 - 2023 in the U.S.","caption":"Calendar heat chart showing the weekly patterns for fatal motor vehicle crashes for 2019 - 2023 in the U.S.","name":"weekly-patterns-for-fatal-motor-vehicle-crashes-2019-2023","status":"inherit","uploaded_to":2961660,"date":"2026-04-01 19:17:13","modified":"2026-04-01 19:21:37","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":745,"height":506,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-2019-2023-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-2019-2023.png","medium-width":384,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-2019-2023.png","medium_large-width":745,"medium_large-height":506,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-2019-2023.png","large-width":745,"large-height":506,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-2019-2023.png","1536x1536-width":745,"1536x1536-height":506,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-2019-2023.png","2048x2048-width":745,"2048x2048-height":506,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-2019-2023-685x465.png","card_image-width":685,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-2019-2023.png","wide_image-width":745,"wide_image-height":506}},"image_position":"center","orientation":"horizontal","hyperlink":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-2019-2023.png"},{"acf_fc_layout":"content","content":"<p>From this chart, we can see in dark purple, that late-night hours and especially weekends have a highest number of fatal motor vehicle crashes.<\/p>\n"},{"acf_fc_layout":"content","content":"<h3 data-section-id=\"6i4v5g\" data-start=\"3029\" data-end=\"3048\">Seasonal trends<\/h3>\n<p data-start=\"3049\" data-end=\"3074\">A <strong data-start=\"3051\" data-end=\"3064\">year view<\/strong> can show:<\/p>\n<ul data-start=\"3075\" data-end=\"3202\">\n<li data-section-id=\"2nd2cc\" data-start=\"3075\" data-end=\"3126\">Increased crashes during <strong data-start=\"3102\" data-end=\"3126\">summer travel months<\/strong><\/li>\n<li data-section-id=\"8nfvii\" data-start=\"3127\" data-end=\"3161\">Spikes around <strong data-start=\"3143\" data-end=\"3161\">major holidays<\/strong><\/li>\n<li data-section-id=\"1erle96\" data-start=\"3162\" data-end=\"3202\">Variations tied to weather or daylight<\/li>\n<\/ul>\n<p data-start=\"3204\" data-end=\"3304\">Because the chart aggregates across years, it reveals typical patterns rather than one-off events.<\/p>\n<p>&nbsp;<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2961827,"id":2961827,"title":"Annual Pattern of Motor Vehicle Fatalities (2019-2023)","filename":"Annual-Pattern-of-Motor-Vehicle-Fatalities-2019-2023.png","filesize":59563,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Annual-Pattern-of-Motor-Vehicle-Fatalities-2019-2023.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/visualizing-fatal-crash-patterns-with-calendar-heat-charts-in-map-viewer\/annual-pattern-of-motor-vehicle-fatalities-2019-2023","alt":"Calendar heat chart showing the annual patterns for fatalities from motor vehicle crashes for 2019 - 2023 in the U.S.","author":"134231","description":"Calendar heat chart showing the annual patterns for fatalities from motor vehicle crashes for 2019 - 2023 in the U.S.","caption":"Calendar heat chart showing the annual patterns for fatalities from motor vehicle crashes for 2019 - 2023 in the U.S.","name":"annual-pattern-of-motor-vehicle-fatalities-2019-2023","status":"inherit","uploaded_to":2961660,"date":"2026-04-01 19:18:15","modified":"2026-04-01 19:21:25","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1394,"height":721,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Annual-Pattern-of-Motor-Vehicle-Fatalities-2019-2023-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Annual-Pattern-of-Motor-Vehicle-Fatalities-2019-2023.png","medium-width":464,"medium-height":240,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Annual-Pattern-of-Motor-Vehicle-Fatalities-2019-2023.png","medium_large-width":768,"medium_large-height":397,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Annual-Pattern-of-Motor-Vehicle-Fatalities-2019-2023.png","large-width":1394,"large-height":721,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Annual-Pattern-of-Motor-Vehicle-Fatalities-2019-2023.png","1536x1536-width":1394,"1536x1536-height":721,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Annual-Pattern-of-Motor-Vehicle-Fatalities-2019-2023.png","2048x2048-width":1394,"2048x2048-height":721,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Annual-Pattern-of-Motor-Vehicle-Fatalities-2019-2023-826x427.png","card_image-width":826,"card_image-height":427,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Annual-Pattern-of-Motor-Vehicle-Fatalities-2019-2023.png","wide_image-width":1394,"wide_image-height":721}},"image_position":"center","orientation":"horizontal","hyperlink":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Annual-Pattern-of-Motor-Vehicle-Fatalities-2019-2023.png"},{"acf_fc_layout":"content","content":"<p>From this chart, we can see in dark purple, that summer and autumn months have a higher number of fatal motor vehicle crashes on average than winter and spring months. We also see holidays, such as New Year&#8217;s Day (01\/01), Independence Day (07\/04), Labor Day (07\/01-07\/07), and Memorial Day (04\/25 &#8211; 04\/31), have higher numbers of fatal motor vehicle crashes.<\/p>\n"},{"acf_fc_layout":"content","content":"<h3 data-section-id=\"6i4v5g\" data-start=\"3029\" data-end=\"3048\">Geographic trends<\/h3>\n<p data-start=\"3049\" data-end=\"3074\">Filtering your data by location can show:<\/p>\n<ul data-start=\"3075\" data-end=\"3202\">\n<li data-section-id=\"2nd2cc\" data-start=\"3075\" data-end=\"3126\">A localized view of when fatal crashes happen<\/li>\n<li data-section-id=\"2nd2cc\" data-start=\"3075\" data-end=\"3126\">A comparison of how temporal patterns compare from one geography to another<\/li>\n<\/ul>\n"},{"acf_fc_layout":"content","content":"<h3 style=\"text-align: center\"><strong>California<\/strong><\/h3>\n"},{"acf_fc_layout":"image","image":{"ID":2961847,"id":2961847,"title":"Weekly Patterns for Fatal Motor Vehicle Crashes in California (2019-2023)","filename":"Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-California-2019-2023.png","filesize":49840,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-California-2019-2023.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/visualizing-fatal-crash-patterns-with-calendar-heat-charts-in-map-viewer\/weekly-patterns-for-fatal-motor-vehicle-crashes-in-california-2019-2023","alt":"Calendar heat chart showing the weekly patterns for fatal motor vehicle crashes for 2019 - 2023 in California.","author":"134231","description":"Calendar heat chart showing the weekly patterns for fatal motor vehicle crashes for 2019 - 2023 in California.","caption":"Calendar heat chart showing the weekly patterns for fatal motor vehicle crashes for 2019 - 2023 in California.","name":"weekly-patterns-for-fatal-motor-vehicle-crashes-in-california-2019-2023","status":"inherit","uploaded_to":2961660,"date":"2026-04-01 20:14:15","modified":"2026-04-01 20:14:29","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1394,"height":721,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-California-2019-2023-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-California-2019-2023.png","medium-width":464,"medium-height":240,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-California-2019-2023.png","medium_large-width":768,"medium_large-height":397,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-California-2019-2023.png","large-width":1394,"large-height":721,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-California-2019-2023.png","1536x1536-width":1394,"1536x1536-height":721,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-California-2019-2023.png","2048x2048-width":1394,"2048x2048-height":721,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-California-2019-2023-826x427.png","card_image-width":826,"card_image-height":427,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-California-2019-2023.png","wide_image-width":1394,"wide_image-height":721}},"image_position":"center","orientation":"horizontal","hyperlink":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-California-2019-2023.png"},{"acf_fc_layout":"content","content":"<p>From this chart, we can see in dark purple, that late-night hours and especially weekends have a highest number of fatal motor vehicle crashes.<\/p>\n"},{"acf_fc_layout":"content","content":"<h3 style=\"text-align: center\"><strong>Texas<\/strong><\/h3>\n"},{"acf_fc_layout":"image","image":{"ID":2961848,"id":2961848,"title":"Weekly Patterns for Fatal Motor Vehicle Crashes in Texas (2019-2023)","filename":"Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-Texas-2019-2023.png","filesize":49255,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-Texas-2019-2023.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/visualizing-fatal-crash-patterns-with-calendar-heat-charts-in-map-viewer\/weekly-patterns-for-fatal-motor-vehicle-crashes-in-texas-2019-2023","alt":"Calendar heat chart showing the weekly patterns for fatal motor vehicle crashes for 2019 - 2023 in Texas.","author":"134231","description":"Calendar heat chart showing the weekly patterns for fatal motor vehicle crashes for 2019 - 2023 in Texas.","caption":"Calendar heat chart showing the weekly patterns for fatal motor vehicle crashes for 2019 - 2023 in Texas.","name":"weekly-patterns-for-fatal-motor-vehicle-crashes-in-texas-2019-2023","status":"inherit","uploaded_to":2961660,"date":"2026-04-01 20:17:22","modified":"2026-04-01 20:17:41","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1394,"height":721,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-Texas-2019-2023-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-Texas-2019-2023.png","medium-width":464,"medium-height":240,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-Texas-2019-2023.png","medium_large-width":768,"medium_large-height":397,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-Texas-2019-2023.png","large-width":1394,"large-height":721,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-Texas-2019-2023.png","1536x1536-width":1394,"1536x1536-height":721,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-Texas-2019-2023.png","2048x2048-width":1394,"2048x2048-height":721,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-Texas-2019-2023-826x427.png","card_image-width":826,"card_image-height":427,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-Texas-2019-2023.png","wide_image-width":1394,"wide_image-height":721}},"image_position":"center","orientation":"horizontal","hyperlink":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-in-Texas-2019-2023.png"},{"acf_fc_layout":"content","content":"<p>From this chart, we can see in dark purple, that highest number of fatal motor vehicle crashes happen at 2am on Saturday and Sunday. These time periods align with bar close in Texas. Note that the legend in the California and TExas use different breaks for the colors, so they are not directly comparable.<\/p>\n"},{"acf_fc_layout":"content","content":"<h3 data-section-id=\"6i4v5g\" data-start=\"3029\" data-end=\"3048\">Driver Characteristic Trends<\/h3>\n<p data-start=\"3049\" data-end=\"3074\"><span style=\"text-decoration: underline\">Alcohol Related Crashes<\/span>:<\/p>\n<ul data-start=\"3075\" data-end=\"3202\">\n<li data-section-id=\"2nd2cc\" data-start=\"3075\" data-end=\"3126\">Increased crashes during <strong>late nights<\/strong> and <strong>early mornings<\/strong>, especially during <strong>weekends<\/strong>.<\/li>\n<li data-section-id=\"8nfvii\" data-start=\"3127\" data-end=\"3161\">Spikes around <strong data-start=\"3143\" data-end=\"3161\">major holidays<\/strong><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2961855,"id":2961855,"title":"Weekly Patterns for Fatal Motor Vehicle Crashes with an Alcohol Related Crash (2019-2023)","filename":"Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-an-Alcohol-Related-Crash-2019-2023.png","filesize":51750,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-an-Alcohol-Related-Crash-2019-2023.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/visualizing-fatal-crash-patterns-with-calendar-heat-charts-in-map-viewer\/weekly-patterns-for-fatal-motor-vehicle-crashes-with-an-alcohol-related-crash-2019-2023","alt":"Calendar heat chart showing the weekly patterns for alcohol involved fatal motor vehicle crashes for 2019 - 2023 in the U.S.","author":"134231","description":"Calendar heat chart showing the weekly patterns for alcohol involved fatal motor vehicle crashes for 2019 - 2023 in the U.S.","caption":"Calendar heat chart showing the weekly patterns for alcohol involved fatal motor vehicle crashes for 2019 - 2023 in the U.S.","name":"weekly-patterns-for-fatal-motor-vehicle-crashes-with-an-alcohol-related-crash-2019-2023","status":"inherit","uploaded_to":2961660,"date":"2026-04-01 20:32:08","modified":"2026-04-07 16:00:10","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1394,"height":721,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-an-Alcohol-Related-Crash-2019-2023-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-an-Alcohol-Related-Crash-2019-2023.png","medium-width":464,"medium-height":240,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-an-Alcohol-Related-Crash-2019-2023.png","medium_large-width":768,"medium_large-height":397,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-an-Alcohol-Related-Crash-2019-2023.png","large-width":1394,"large-height":721,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-an-Alcohol-Related-Crash-2019-2023.png","1536x1536-width":1394,"1536x1536-height":721,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-an-Alcohol-Related-Crash-2019-2023.png","2048x2048-width":1394,"2048x2048-height":721,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-an-Alcohol-Related-Crash-2019-2023-826x427.png","card_image-width":826,"card_image-height":427,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-an-Alcohol-Related-Crash-2019-2023.png","wide_image-width":1394,"wide_image-height":721}},"image_position":"center","orientation":"horizontal","hyperlink":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-an-Alcohol-Related-Crash-2019-2023.png"},{"acf_fc_layout":"content","content":"<p>From this chart, we can see in dark purple, that latest hours during weekends have the highest number of fatal motor vehicle crashes due to alcohol-related crashes. These hours align when most people are at bars, and around bar close hours.<\/p>\n"},{"acf_fc_layout":"content","content":"<p data-start=\"3049\" data-end=\"3074\"><span style=\"text-decoration: underline\">Drowsy Driver Related Crashes<\/span>:<\/p>\n<ul data-start=\"3075\" data-end=\"3202\">\n<li data-section-id=\"2nd2cc\" data-start=\"3075\" data-end=\"3126\">Increased crashes during <strong>late nights<\/strong> and <strong>early mornings<\/strong>, especially during <b>weekends.<\/b><\/li>\n<\/ul>\n"},{"acf_fc_layout":"image","image":{"ID":2961858,"id":2961858,"title":"Weekly Patterns for Fatal Motor Vehicle Crashes with a Drowsy Driver Related Crash (2019-2023)","filename":"Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-a-Drowsy-Driver-Related-Crash-2019-2023.png","filesize":52423,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-a-Drowsy-Driver-Related-Crash-2019-2023.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/visualizing-fatal-crash-patterns-with-calendar-heat-charts-in-map-viewer\/weekly-patterns-for-fatal-motor-vehicle-crashes-with-a-drowsy-driver-related-crash-2019-2023","alt":"Calendar heat chart showing the weekly patterns for drowsy driver involved fatal motor vehicle crashes for 2019 - 2023 in the U.S.","author":"134231","description":"Calendar heat chart showing the weekly patterns for drowsy driver involved fatal motor vehicle crashes for 2019 - 2023 in the U.S.","caption":"Calendar heat chart showing the weekly patterns for drowsy driver involved fatal motor vehicle crashes for 2019 - 2023 in the U.S.","name":"weekly-patterns-for-fatal-motor-vehicle-crashes-with-a-drowsy-driver-related-crash-2019-2023","status":"inherit","uploaded_to":2961660,"date":"2026-04-01 20:43:07","modified":"2026-04-07 16:00:36","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1394,"height":721,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-a-Drowsy-Driver-Related-Crash-2019-2023-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-a-Drowsy-Driver-Related-Crash-2019-2023.png","medium-width":464,"medium-height":240,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-a-Drowsy-Driver-Related-Crash-2019-2023.png","medium_large-width":768,"medium_large-height":397,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-a-Drowsy-Driver-Related-Crash-2019-2023.png","large-width":1394,"large-height":721,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-a-Drowsy-Driver-Related-Crash-2019-2023.png","1536x1536-width":1394,"1536x1536-height":721,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-a-Drowsy-Driver-Related-Crash-2019-2023.png","2048x2048-width":1394,"2048x2048-height":721,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-a-Drowsy-Driver-Related-Crash-2019-2023-826x427.png","card_image-width":826,"card_image-height":427,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-a-Drowsy-Driver-Related-Crash-2019-2023.png","wide_image-width":1394,"wide_image-height":721}},"image_position":"center","orientation":"horizontal","hyperlink":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-with-a-Drowsy-Driver-Related-Crash-2019-2023.png"},{"acf_fc_layout":"content","content":"<p>From this chart, we can see in dark purple that the early hours throughout the week have higher numbers of fatal motor vehicle crashes due to drowsiness, with a peak at 6 a.m. This trend is especially pronounced on weekends from midnight to 7 a.m. These hours align when drowsy-related fatal car crashes peak in the early morning due to a combination of natural circadian rhythm dips, peak sleep deprivation, and the cumulative effect of long work shifts<\/p>\n"},{"acf_fc_layout":"content","content":"<h3 data-section-id=\"6i4v5g\" data-start=\"3029\" data-end=\"3048\">Transportation Mode Trends<\/h3>\n<p data-start=\"3049\" data-end=\"3074\"><span style=\"text-decoration: underline\">Motorcycle-involved Crashes<\/span>:<\/p>\n<ul data-start=\"3075\" data-end=\"3202\">\n<li data-section-id=\"2nd2cc\" data-start=\"3075\" data-end=\"3126\">Increased crashes during <strong>afternoon <\/strong>and <strong>evenings<\/strong>, especially during <b>weekends.<\/b><\/li>\n<\/ul>\n"},{"acf_fc_layout":"image","image":{"ID":2961864,"id":2961864,"title":"Weekly Patterns for Fatal Motor Vehicle Involving a Motorcycle Crash (2019-2023)","filename":"Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Motorcycle-Crash-2019-2023.png","filesize":51765,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Motorcycle-Crash-2019-2023.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/visualizing-fatal-crash-patterns-with-calendar-heat-charts-in-map-viewer\/weekly-patterns-for-fatal-motor-vehicle-involving-a-motorcycle-crash-2019-2023","alt":"Calendar heat chart showing the weekly patterns for motorcycle involved fatal motor vehicle crashes for 2019 - 2023 in the U.S.","author":"134231","description":"Calendar heat chart showing the weekly patterns for motorcycle involved fatal motor vehicle crashes for 2019 - 2023 in the U.S.","caption":"Calendar heat chart showing the weekly patterns for motorcycle involved fatal motor vehicle crashes for 2019 - 2023 in the U.S.","name":"weekly-patterns-for-fatal-motor-vehicle-involving-a-motorcycle-crash-2019-2023","status":"inherit","uploaded_to":2961660,"date":"2026-04-01 20:52:43","modified":"2026-04-07 16:00:50","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1394,"height":721,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Motorcycle-Crash-2019-2023-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Motorcycle-Crash-2019-2023.png","medium-width":464,"medium-height":240,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Motorcycle-Crash-2019-2023.png","medium_large-width":768,"medium_large-height":397,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Motorcycle-Crash-2019-2023.png","large-width":1394,"large-height":721,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Motorcycle-Crash-2019-2023.png","1536x1536-width":1394,"1536x1536-height":721,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Motorcycle-Crash-2019-2023.png","2048x2048-width":1394,"2048x2048-height":721,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Motorcycle-Crash-2019-2023-826x427.png","card_image-width":826,"card_image-height":427,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Motorcycle-Crash-2019-2023.png","wide_image-width":1394,"wide_image-height":721}},"image_position":"center","orientation":"horizontal","hyperlink":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Motorcycle-Crash-2019-2023.png"},{"acf_fc_layout":"content","content":"<p>From this chart, we can see in dark purple, that the highest number of motorcycle-involved fatal motor vehicle crashes happen during the weekend. This corresponds with increased traffic &amp; recreational riding during the weekends.<\/p>\n"},{"acf_fc_layout":"content","content":"<p data-start=\"3049\" data-end=\"3074\"><span style=\"text-decoration: underline\">Pedestrian Crashes<\/span>:<\/p>\n<ul data-start=\"3075\" data-end=\"3202\">\n<li data-section-id=\"2nd2cc\" data-start=\"3075\" data-end=\"3126\">Increased crashes during <strong>evenings<\/strong>, especially during <b>weekends.<\/b><\/li>\n<\/ul>\n"},{"acf_fc_layout":"image","image":{"ID":2961866,"id":2961866,"title":"Weekly Patterns for Fatal Motor Vehicle Involving a Pedestrian Crash (2019-2023)","filename":"Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Pedestrian-Crash-2019-2023.png","filesize":51407,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Pedestrian-Crash-2019-2023.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/visualizing-fatal-crash-patterns-with-calendar-heat-charts-in-map-viewer\/weekly-patterns-for-fatal-motor-vehicle-involving-a-pedestrian-crash-2019-2023","alt":"Calendar heat chart showing the weekly patterns for pedestrian involved fatal motor vehicle crashes for 2019 - 2023 in the U.S.","author":"134231","description":"Calendar heat chart showing the weekly patterns for pedestrian involved fatal motor vehicle crashes for 2019 - 2023 in the U.S.","caption":"Calendar heat chart showing the weekly patterns for pedestrian involved fatal motor vehicle crashes for 2019 - 2023 in the U.S.","name":"weekly-patterns-for-fatal-motor-vehicle-involving-a-pedestrian-crash-2019-2023","status":"inherit","uploaded_to":2961660,"date":"2026-04-01 20:58:27","modified":"2026-04-07 16:01:02","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1394,"height":721,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Pedestrian-Crash-2019-2023-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Pedestrian-Crash-2019-2023.png","medium-width":464,"medium-height":240,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Pedestrian-Crash-2019-2023.png","medium_large-width":768,"medium_large-height":397,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Pedestrian-Crash-2019-2023.png","large-width":1394,"large-height":721,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Pedestrian-Crash-2019-2023.png","1536x1536-width":1394,"1536x1536-height":721,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Pedestrian-Crash-2019-2023.png","2048x2048-width":1394,"2048x2048-height":721,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Pedestrian-Crash-2019-2023-826x427.png","card_image-width":826,"card_image-height":427,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Pedestrian-Crash-2019-2023.png","wide_image-width":1394,"wide_image-height":721}},"image_position":"center","orientation":"horizontal","hyperlink":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Involving-a-Pedestrian-Crash-2019-2023.png"},{"acf_fc_layout":"content","content":"<p>From this chart, we can see in dark purple, that the highest number of pedestrian-involved fatal motor vehicle crashes happen during the evening hours and night hours. This is often attributed to when daylight hours are reduced, and where light conditions are poor.<\/p>\n"},{"acf_fc_layout":"content","content":"<h2 data-section-id=\"1vn7xl9\" data-start=\"3311\" data-end=\"3330\"><strong>Why this matters<\/strong><\/h2>\n<p data-start=\"3332\" data-end=\"3422\">Calendar heat charts complement spatial analysis by adding a critical dimension: <strong data-start=\"3413\" data-end=\"3421\">time<\/strong>.<\/p>\n<p data-start=\"3424\" data-end=\"3448\">Traditional maps answer:<\/p>\n<blockquote data-start=\"3449\" data-end=\"3481\">\n<p data-start=\"3451\" data-end=\"3481\"><em data-start=\"3451\" data-end=\"3481\">Where are fatal crashes happening?<\/em><\/p>\n<\/blockquote>\n<p data-start=\"3483\" data-end=\"3511\">Calendar heat charts answer:<\/p>\n<blockquote data-start=\"3512\" data-end=\"3554\">\n<p data-start=\"3514\" data-end=\"3554\"><em data-start=\"3514\" data-end=\"3554\">When are fatal crashes most likely to occur?<\/em><\/p>\n<\/blockquote>\n<p data-start=\"3556\" data-end=\"3648\">Together, they provide a more complete picture\u2014helping analysts, planners, and policymakers:<\/p>\n<ul data-start=\"3649\" data-end=\"3782\">\n<li data-section-id=\"cygn0m\" data-start=\"3649\" data-end=\"3684\">Identify high-risk time windows<\/li>\n<li data-section-id=\"1rh9klp\" data-start=\"3685\" data-end=\"3733\">Inform enforcement and prevention strategies<\/li>\n<li data-section-id=\"1sdrl2i\" data-start=\"3734\" data-end=\"3782\">Communicate patterns clearly to stakeholders<\/li>\n<\/ul>\n"},{"acf_fc_layout":"content","content":"<h2 data-section-id=\"5hgyl4\" data-start=\"4125\" data-end=\"4144\"><strong>Closing thoughts<\/strong><\/h2>\n<p data-start=\"4146\" data-end=\"4420\">The addition of calendar heat charts in Map Viewer brings a powerful new way to explore time-based data. When combined with authoritative datasets like FARS from Living Atlas, it opens the door to deeper insights into real-world problems. Use your own time-enabled data, or other Living Atlas content to visualize temporal patterns with the new calendar heat chart in Map Viewer.<\/p>\n"}],"related_articles":[{"ID":2956829,"post_author":"8102","post_date":"2026-02-19 10:11:50","post_date_gmt":"2026-02-19 18:11:50","post_content":"","post_title":"Visualize Temporal Patterns with Calendar Heat Charts in Map Viewer","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"visualize-temporal-patterns-with-calendar-heat-charts-in-map-viewer","to_ping":"","pinged":"","post_modified":"2026-02-26 10:27:58","post_modified_gmt":"2026-02-26 18:27:58","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=2956829","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":2885472,"post_author":"134231","post_date":"2025-07-14 07:00:05","post_date_gmt":"2025-07-14 14:00:05","post_content":"","post_title":"Fatality Analysis Reporting System in Living Atlas","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"fatality-analysis-reporting-system-in-living-atlas","to_ping":"","pinged":"","post_modified":"2025-07-14 07:01:03","post_modified_gmt":"2025-07-14 14:01:03","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=2885472","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":2190282,"post_author":"58731","post_date":"2023-12-21 05:00:03","post_date_gmt":"2023-12-21 13:00:03","post_content":"","post_title":"Get the most out of your temporal data with Arcade","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"get-the-most-out-of-your-temporal-data-with-arcade","to_ping":"","pinged":"","post_modified":"2024-11-11 12:29:02","post_modified_gmt":"2024-11-11 20:29:02","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=2190282","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":2943579,"post_author":"299212","post_date":"2025-10-23 08:30:51","post_date_gmt":"2025-10-23 15:30:51","post_content":"","post_title":"What\u2019s new in Map Viewer Charts (October 2025)","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"whats-new-in-map-viewer-charts-october-2025","to_ping":"","pinged":"","post_modified":"2025-11-07 10:49:19","post_modified_gmt":"2025-11-07 18:49:19","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=2943579","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":1722702,"post_author":"299212","post_date":"2023-11-21 08:45:46","post_date_gmt":"2023-11-21 16:45:46","post_content":"","post_title":"Map Viewer Charts | Frequently Asked Questions (FAQs)","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"map-viewer-charts-frequently-asked-questions-faqs","to_ping":"","pinged":"","post_modified":"2023-11-21 08:44:48","post_modified_gmt":"2023-11-21 16:44:48","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=1722702","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"1","filter":"raw"},{"ID":1198152,"post_author":"6771","post_date":"2021-04-14 04:53:00","post_date_gmt":"2021-04-14 11:53:00","post_content":"","post_title":"Introducing Charts in Map Viewer","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"introducing-charts-in-map-viewer","to_ping":"","pinged":"","post_modified":"2021-04-23 10:26:45","post_modified_gmt":"2021-04-23 17:26:45","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=1198152","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"}],"authors":[{"ID":134231,"user_firstname":"Steven","user_lastname":"Aviles","nickname":"Steven Aviles","user_nicename":"saviles","display_name":"Steven Aviles","user_email":"saviles@esri.com","user_url":"","user_registered":"2020-12-01 21:32:42","user_description":"Steven is a Product Engineer on ArcGIS Living Atlas of the World's Policy Maps team. He is interested in transportation, housing, and demography. Steven enjoys a good chicken wing or 12.","user_avatar":"<img data-del=\"avatar\" src='https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2020\/12\/Temp_Photo-213x200.jpg' class='avatar pp-user-avatar avatar-96 photo ' height='96' width='96'\/>"}],"show_article_image":false,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/04\/Weekly-Patterns-for-Fatal-Motor-Vehicle-Crashes-2019-2023-Blog-Card.png","wide_image":false},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO v25.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Visualizing Fatal Crash Patterns with Calendar Heat Charts in Map Viewer<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/visualizing-fatal-crash-patterns-with-calendar-heat-charts-in-map-viewer\" \/>\n<meta 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