Intrusion Alarms

Use of drone radar, safety intrusion alarms, CB Wizard, and automated flaggers in work zones (Practice)

TxDOT has used drone radar in both rural and urban work zones, mostly in mobile operations. It was perceived to be somewhat effective as a speed control measure. Problem: It targets only road users wi… More

Use of drone radar, safety intrusion alarms, and CB Wizard in work zones (Practice)

16 units of drone radar were used statewide in Virginia. They were not perceived to be very effective as a speed control measure. A disadvantage was that project personnel had to keep them charged and… More

Use of drone radar and safety intrusion alarms in work zones (Practice)

Caltrans has used radar speed trailers in work zones and has experimented with other drone-type speed advisory devices. The devices have been effective, especially on high-speed interstate freeways fr… More

Technology Spurs Work Sites to Become Safer: Connected Technology Installed on Site and in Works Vehicles has the Promise of Reducing Harm for Personnel Maintaining the Highway (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

Two intelligent safety systems have been introduced in the North East to improve the safety of roadsite workers and delivery drivers arriving on site. The first system is known as Intellicone Safelane…More

Use of safety intrusion alarms in work zones (Practice)

After testing two models of the work zone intrusion alarm, Vermont DOT's research unit purchased a model that uses an infrared beam sent from a transmitter unit to a receiver unit that also houses the… More

Use of safety intrusion alarms in work zones (Practice)

New York DOT compared three models of intrusion alarm during a series of demonstrations and field evaluations across the state in the summer of 1994. Errant vehicles set off the intrusion alarms sever… More

Assessing Driver Understanding and Responses to a Visual and Audible Work Zone Intrusion Alarm System (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

Oldcastle Materials and ARTIS, LLC joined forces to develop an innovative work zone intrusion detection and alarm system. The system flashes LED lights and emits an audible alarm if an intrusion is de…More

Nevada:Use of safety intrusion alarms in work zones (Practice)

Nevada DOT has used safety intrusion alarms in work zones. The type of safety intrusion alarm used is electrical. The system was effective at first, but construction vehicles began running through the… More

Improving Construction Work Zone Safety Using Technology: A Systematic Review of Applicable Technologies (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

Once considered conventional, the construction industry is gradually increasing its reliance on innovations such as the application of technologies in safety management. Given the growing literature o…More

Active Work Zone Safety: Preventing Accidents Using Intrusion Sensing Technologies (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

Highway construction work zones are hazardous environments characterized by a dynamic and limited workspace. A host of interactions between workers, passing commuter vehicles, and moving construction …More

Queue Length Detector Reduces Risk of Rear-End Accidents in Work Zones (Publication)

Resource Type: News and Other Non-research Articles

Motorists and workers in the work zones on U.S. Route 22 in Pennsylvania will be safer thanks to the infrared intrusion alarm and the queue length detector, two work zone safety devices developed unde…More

Work Zone Up Ahead: Other States Call TTI for Work Zone Research (Publication)

Resource Type: Articles

The safety of traffic operations in work zones has been a priority nationwide. This article describes the Texas Transportation Institute (TTI)'s involvement in three recent work zone research project…More

Inventory of Best Practices to Prevent Incursions into Work Zones – Literature Review (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

The aim of this report was to review the literature to identify existing best practices used to prevent incursions into work zones and improve safety of road users and road workers. A systematic liter…More

Leveraging Technology to Improve Roadway and Work Zone Safety in Nevada (Publication)

Resource Type: News and Other Non-research Articles

In an effort to prevent collisions and reduce congestion brought by the population growth, the Regional Transportation Commission of Southern Nevada (RTC)’s Traffic Management Center has actively te…More

Traffic management techniques (beyond the MUTCD) used to reduce accidents in work zones (Practice)

Nevada uses the following: speed reductions prior to and through work zones, intrusion alarm systems, fluorescent orange sheeting for all construction signs for improved visibility, and night work dur… More

Researchers’ Prototype Vest Offers a Warning System for Roadside Construction Workers, Rescue Personnel (Publication)

Resource Type: Articles, News and Other Non-research Articles

Working at a construction site is a dangerous job. Virginia Tech researchers created InZoneAlert vest which combines radio sensors that construction workers can wear on or inside vests with connected …More

Closed-Course Performance Testing of a Work Zone Intrusion Alarm System (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

Oldcastle Materials and ARTIS, LLC joined forces to develop an innovative work zone intrusion detection and alarm system. The alarm system flashes LED lights and emits an audible alarm if an intrusion…More

Case Study to Evaluate Work-Zone Safety Technologies in Highway Construction (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

The construction industry is known for its conservative approach toward adopting new, emerging technologies. This conservative approach for adopting technology is caused by multiple factors including …More

Maintenance Work Zone Safety Devices Development and Evaluation (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

This report presents the findings of tests and evaluations of several new work zone safety devices. The prototypes of the 25 devices were designed, developed, fabricated, tested, evaluated, and refine…More

Evaluation of Innovative Traffic Safety Devices at Short-Term Work Zones (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

The objective of this study was to investigate and evaluate the usage and effectiveness of innovative traffic control devices that can be used in short-term work zones. Any device to be used in short-…More

Evaluating Work Zone Intrusion Alert Technology: Recommendation for Future Development (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

Roadway construction and maintenance workers are often exposed to substantial safety risks resulting in part from working in close proximity to live traffic. As a result of this hazardous work environ…More

Active Work Zone Safety Using Emerging Technologies 2017 (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

Highway construction work zones are hazardous environments characterized by a dynamic and limited work space. A host of interactions between workers, passing commuter vehicles, and moving construction…More

IoT-Based Detecting, Locating and Alarming of Unauthorized Intrusion on Construction Sites (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

Monitoring of unauthorized intrusion on construction sites is crucial to reducing safety accidents. The existing methods have shortages such as detection error, locating error, alarming delay and diff…More

Best Practices for Maximizing Driver Attention to Work Zone Warning Signs (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

Studies have shown that rear-end crashes in the advance warning area for a work zone are the most common type of work zone crashes. Driver inattention (or distraction) is reported as the most commo…More

Reducing Highway Construction Fatalities Through Improved Adoption of Safety Technologies (Publication)

Resource Type: Books, Reports, Papers, and Research Articles

Highway construction is commonly associated with high rates of worker accidents. Nevertheless, the diffusion of safety technologies such as work zone intrusion alert technology (WZIAT) within the high…More

TRB Webinar: Enhance Work Zone Safety With New Technologies (Training)

Work zone safety for road workers remains a challenge. TRB will conduct this webinar to explore several technologies for safer work zones. Presenters will discuss technologies that mitigate work zone … More