[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-497026-105":3,"detail-sidebar-cat-0-en-105":80,"doc-detail-497026-en":130},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":73,"head_meta":75,"extra_data":77,"updated_unix":79},105,"en","automated-speed-enforcement-in-work-zones","Automated Speed Enforcement in Work Zones","","Automated Speed Enforcement (ASE) uses camera and sensor systems to identify vehicles speeding through construction work zones and trigger citations based on a predefined speed threshold. The document explains how Illinois, Washington State, and Maryland deploy ASE units, including operator roles, required worker presence and signage, and the use of radar or lidar for speed measurement. It also summarizes observed impacts such as reduced average speeds, improved compliance, and lower speed variability, alongside enforcement penalties and procedural requirements.",{"@graph":14,"@context":72},[15,34,55],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/healthcare/","Healthcare",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/automated-speed-enforcement-in-work-zones/497026/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/automated-speed-enforcement-in-work-zones/497026.png","ImageObject",300,407,{"name":42,"@type":43},"Anna Hans","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-05","2026-10-02",true,{"@type":52,"interactionType":53,"userInteractionCount":33},"InteractionCounter",{"@type":54},"ViewAction",{"@type":56,"mainEntity":57},"FAQPage",[58,64,68],{"name":59,"@type":60,"acceptedAnswer":61},"How does Automated Speed Enforcement (ASE) determine speeding violations in work zones?","Question",{"text":62,"@type":63},"ASE captures vehicle images and records date, time, location, and speed. It uses radar or lidar to measure speed against a predefined threshold and then identifies the registered owner via the license plate for citation processing.","Answer",{"name":65,"@type":60,"acceptedAnswer":66},"What requirements apply when ASE units are used in work zones?",{"text":67,"@type":63},"In Illinois and Washington State, workers must be present when the ASE unit is used and special signs must be posted to inform road users that the van is present. These requirements support safe enforcement and notification for drivers.",{"name":69,"@type":60,"acceptedAnswer":70},"What outcomes were reported from ASE pilot and implementation efforts?",{"text":71,"@type":63},"Studies in Illinois indicated ASE reduced average speeds and increased compliance. Washington State pilots reported lower ASE speeds, fewer vehicles exceeding higher speed levels, and no traffic incidents. Maryland noted that ASE use contributed to substantial reductions in related outcomes mentioned in the text.","https://schema.org",{"og:url":32,"og:type":74,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":76,"canonical":32},"index,follow",{"doc_id":78,"site_id":7},497026,1792203455,{"code":4,"msg":81,"data":82},"success",[83,87,91,95,100,105,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":84,"show_sort_weight":85,"slug":86},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":88,"show_sort_weight":89,"slug":90},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":92,"show_sort_weight":93,"slug":94},"Exam",70,"exam",{"id":96,"doc_module":4,"doc_module_name":25,"category_name":97,"show_sort_weight":98,"slug":99},5,"Comic",60,"comic",{"id":101,"doc_module":4,"doc_module_name":25,"category_name":102,"show_sort_weight":103,"slug":104},6,"Technology",50,"technology",{"id":106,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":107,"slug":108},7,40,"healthcare",{"id":110,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},8,"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":96,"slug":129},19,"General","general",{"code":4,"msg":81,"data":131},{"doc_id":78,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":106,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":33,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":26,"language":139,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":12,"update_tm":143,"read_time":96,"preview_page_count":4},5909892332657,"https://ap-avatar.wpscdn.com/davatar_994ba38a5ba835b3df7d355c54d3ed8d","predefined threshold. A camera then captures an image of the vehicle and in some cases the driver. The images are embedded with the date, time, location, and speed information. The registered owner of the vehicle is then identified via the license plate number and receives a citation in the mail. ASE demonstration projects have also been conducted by the Arizona and Oregon DOTs.  \nImplementation  \nThe Illinois DOT implemented the nation’s first automated work zone enforcement program in 2006 and is continuing to use automated enforcement to improve safety in work zones. Illinois uses an ASE system that is selfcontained within a van. The vans are staffed by Illinois State Police officers trained to use the ASE equipment. Illinois law requires that workers be present when the ASE unit is used and that special signs be posted to inform road users that the van is present. Two radar systems (upstream and directly across the lane from the van) monitor the speeds of approaching vehicles. The speed obtained at the upstream location is shown on a display on top of the van, providing drivers one last chance to reduce their speeds prior to reaching the across-the-lane radar at the van, which is used to determine whether the vehicle is exceeding a predefined speed threshold value. For the first violation, the fine is $375. For the second violation, the fine is $1000 and a 90-day suspension of the license. A court appearance is mandatory for each violation. 1,2  \nStudies in Illinois showed that ASE is effective in reducing the average speed and increasing compliance with work  \nAutomated Speed Enforcement in Work Zones  \nDEVELOPED BY  \nRoadway Safety Consortium 202-628-5465 [www.workzonesafety.org](www.workzonesafety.org)  \nPARTNERS  \nLaborers’ International Union of North America . Laborers’Health and Safety Fund of North America . LIUNA Training and Education Fund. American Road and Transportation Builders Association . National Asphalt Pavement Association . International Union of Operating Engineers . American Association of State Highway and Transportation Officials . Texas Transportation Institute. FOF Communications  \nACKNOWLEDGEMENT  \nThis material is based upon work supported by the Federal Highway Administration under Grant Agreement No. DTFH61- 06-G-00007. Any opinions, findings and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the Federal Highway Administration. This publication does not constitute a national standard, specification or regulation.  \nExcessive speeding and speed variability are primary factors contributing to work zone crashes. The use of traffic law enforcement is recognized as one of the most effective means of increasing speed limit compliance and decreasing speed variability. Law enforcement personnel  \nmay also be deployed to provide presence near the work area to protect workers and to slow down vehicles in locations with back of queue issues. However, active enforcement by police officers isnot feasible in work zones where geometry is restricted since there are limited areas to perform traffic stops.  \nAutomated speed enforcement (ASE)  \nsystems are one tool in the wide range of speed management techniques that are effective in reducing speeds in work zones, thereby improving traffic and worker safety. ASE systems also increase the efficiency and safety of police officers. Presently, the Illinois Department of Transportation (DOT), the Washington State DOT, and the Maryland State Highway Administration (SHA) utilize automated speed enforcement technology to electronically identify vehicles traveling at a speed above a  \nU . S . Department of Transportation  \nFederal Highway Administration  \nzone speed l mimitis. T. he average speed of free-flowing vehicles decreased between 3 to 8 mph with ASE. In addition, the percentage of vehicles exceeding the speed limit decreased between 5 and 54 percent with ASE. 1,2  \nThe Washingt","cbCaigVZ6Bqh7p2N","https://ap.wps.com/l/cbCaigVZ6Bqh7p2N","pdf",385926,"English","# Automated Speed Enforcement in Work Zones\n## Implementation and enforcement approach\n## State pilot programs and results","[{\"question\":\"How does Automated Speed Enforcement (ASE) determine speeding violations in work zones?\",\"answer\":\"ASE captures vehicle images and records date, time, location, and speed. It uses radar or lidar to measure speed against a predefined threshold and then identifies the registered owner via the license plate for citation processing.\"},{\"question\":\"What requirements apply when ASE units are used in work zones?\",\"answer\":\"In Illinois and Washington State, workers must be present when the ASE unit is used and special signs must be posted to inform road users that the van is present. These requirements support safe enforcement and notification for drivers.\"},{\"question\":\"What outcomes were reported from ASE pilot and implementation efforts?\",\"answer\":\"Studies in Illinois indicated ASE reduced average speeds and increased compliance. Washington State pilots reported lower ASE speeds, fewer vehicles exceeding higher speed levels, and no traffic incidents. Maryland noted that ASE use contributed to substantial reductions in related outcomes mentioned in the text.\"}]","Automated Speed Enforcement in Work Zones | PDF",1790946227]