Queue warning systems provide slow and stopped traffic warnings to motorists before they reach potentially hazardous traffic conditions, giving them time to slow down safely and avoid potential collisions.
They are one of the most important technologies for reducing accidents in the work zone. In fact, according to a study by the Texas Transportation Institute, Queue Systems were proven to reduce crashes by more than 50% and significantly reduced the overall severity of accidents (7).
These systems are especially useful in areas with low sight distance caused by horizontal or vertical curves.
When slow-moving construction vehicles exit the work zone into fast-moving highway traffic, it can create a hazardous situation and lead to traffic accidents. The Solution? The Trucks Entering Roadway Warning System. This real-time warning system immediately alerts oncoming motorists of construction vehicles entering the roadway, enabling them slow down, and change course to avoid accidents.
In this situation, mere seconds can be the difference between life and death. Because of this, QLynx Technologies incorporates lightning fast, millisecond communication technology in our Truck Warning Systems.
Dynamic Lane Merge Systems (DLMS) are designed to improve safety and efficiency on roadways with a lane merge.
When traffic is congested, a DLMS system will advise motorists to merge late, thus reducing backups and increasing road capacity. When traffic is at free-flow, the system will advise motorists to merge earlier, thus smoothing merge patterns.
DLMS systems also often provide warning of slow and stopped traffic ahead, helping cars to slow down sufficiently for safety, as they approach the lane taper area.
Travel time systems inform motorists of real-time travel times and delays through the work zone. These help reduce driver frustration and allow drivers to take alternate routes when work zone delays are heavy.
Travel time systems often incorporate queue warning as well, since both types of information can be collected using the same radar sensors.
Travel times can be monitoring using Bluetooth sensors or radar sensors.
Portable Camera Trailer systems allow you to remotely monitor real-time traffic conditions and broadcast them via the website to motorists or link to TMC employees. Easily monitor traffic and construction, and identify incidents.
Work Zone Pins
Work zone markers digitally identify the work zone area, for display on Waze, and integration with the WZDX (work zone data exchange), and other digital mapping services.
FHWA 2012 Data: 482,000,000 vehicle hours lost in driver delay times in work zones (1)
- Smart Work Zone Systems can provide real-time warnings of delays and suggest alternate routes to travelers, saving time and reducing frustration.
About $6.5 billion dollars, the value of 482 million hours, not including lost wages and lawsuits from deaths or injuries.
- Studies have concluded that Smart Work Zone Systems save more money than they cost. A recent study by Bushman et al showed a benefit to cost ratio between 1.2 to 11.9 (5)
- A 2005 study showed the cost/benefit ratio for travel time systems to be much greater than 1, even without considering safety, fuel, or emissions impacts. (6).
(1) 2019 National Highway Traffic Safety Administration (NHTSA) Fatality Analysis Reporting System and Crash Report Sampling System, US Department of Transportation. https://www.workzonesafety.org/crash-information/work-zone-traffic-crash-trends-and-statistics/
(2) Occupational Highway Transportation Deaths Among Workers Aged ≥55 Years — United States, 2003–2010, CDC Website, August 23, 2013. http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6233a1.htm?s_cid=mm6233a1_e
(3) Lachhwani and Horowitz, Criteria for Portable ATIS, Center for Urban Transportation Studies, University of Wisconsin, October 2005, p23
(4) Lachhwani and Horowitz, Criteria for Portable ATIS, Center for Urban Transportation Studies, University of Wisconsin, October 2005, p63
(5) Bushman et al, Probabilistic performance model for evaluation of a smart work zone deployment, 2007, http://ecommons.usask.ca/handle/10388/etd-03192007-142727
(6) Lachhwani and Horowitz, Criteria for Portable ATIS, Center for Urban Transportation Studies, University of Wisconsin, October 2005, p61
(7) Texas Transportation Institute Queue System Study showing 53% reduction in crashes with use of a queue warning system, and reduction in severity of the crashes that did occur: https://ascelibrary.org/doi/10.1061/JTEPBS.0000084