• Transit Signal Priority
  • Transit Signal Priority
  • Emergency Vehicle Preemption

Increase Safety — Decrease Travel Time

Emergency Vehicle Preemption and Transit Signal Priority

The EMTRAC Priority Management System uses precise navigation technology and secure RF communication to detect equipped transit, emergency, and municipal vehicles and to place priority or preemption requests to intersection signal-control equipment.


EMTRAC Introduction Video: Transit Signal Priority (TSP) and Emergency Vehicle Preemption (EVP)
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the technological leader in signal priority

EMTRAC Rail Line Safety Video: Rail Transit Signal Priority (TSP) and Safety System
EMTRAC Rail Line Safety Video Thumbnail

Rail-Line Safety

EMTRAC Rail-Line Safety

with rail-operator notifications

EMTRAC Rail Worker Safety Video: Demonstrating how Transit Agencies Can Improve Safety for Right-of-Way Rail Workers
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Rail Worker Safety

EMTRAC Rail-Worker Safety

wayside and onboard notification system

EMTRAC Rail Worker Safety Test Video
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Rail Safety Test

EMTRAC Rail-Safety Test

right-of-way and rail-operator notifications

EMTRAC News Items

EMTRAC Bicycle Detection

EMTRAC Bicycle Detection in Minneapolis

May 17, 2016 - Increased safety is an important part of the what the EMTRAC priority management system provides. At a basic level, a higher level of safety is achieved by detecting first-response vehicles and granting them signal priority, thus allowing them to more quickly respond to emergencies while reducing the potential for accidents from crossing vehicles.

However, the EMTRAC system is also used in many cities across North America to detect and grant signal priority to transit vehicles, which contribute to the effectiveness of transit as a whole. Transit ridership is increasing in many areas, and the EMTRAC system provides a comparatively low-cost way to increase schedule adherence.

Similarly, the use of bicycles for transportation is also increasing in many areas. To facilitate this changing nature of transportation—and to encourage active lifestyles—a number of cities are making a concerted effort to expand or improve their bicycle infrastructure.

Infrastructure improvements include dedicated and protected bike lanes, bike boxes (which allow bicyclists to get a head start at intersections), and bicycle traffic lights (which have specific symbols for directing bicycle-only traffic).

In addition to promoting an active lifestyle, these specialized infrastructures also help reduce both collisions and injuries. A 2009 review of 23 studies on bicycling injuries found that bike facilities (e.g. off-road paths, on-road marked bike lanes, and on-road bike routes) are where bicyclists are safest.[1]

However, one continual challenge has been in detecting bicycles at intersections, making the task of bicycle-based signal phasing difficult at best.

The EMTRAC bicycle detection system enables cities to simplify the task of detecting bicycles, while also allowing them to apply the appropriate level of signal priority that is granted to bicycles (and other difficult-to-detect vehicles). The system utilizes the same intersection hardware that is used for both Emergency Vehicle Preemption (EVP) and Transit Signal Priority (TSP). The bicyclist needs only install the EMTRAC detection application on their mobile device.

One way EMTRAC bicycle detection increases safety is by making existing bicycle facilities more effective. As bicyclists are consistently detected and granted signal phasing, rather than having to wait for motorized traffic to "trip" actuated signals, their wait time (and their commute time) decreases—along with their frustration.

As a result, bicycling becomes a more effective alternative to motorized transportation.

The EMTRAC system has been used similarly by transit agencies. By using the EMTRAC system, buses and trains throughout North America are able to more effectively maintain schedule adherence. In these communities, public transit is a valuable asset, and transit ridership has increased as a result.

In regards to safety, bicyclists encounter fewer opportunities to consider "running" red signals when they're consistently detected and the corresponding signal is able to react to their presence.

A Chicago Tribune article noted that bicycle infrastructure on one corridor increased bicyclists obeying traffic signals by 161 percent. The article quotes Lee Crandell of the Active Transportation Alliance as saying "It's important to have infrastructure that speaks to people who are biking. Otherwise, they feel the roadway was not designed for them."[2]

The EMTRAC bicycle detection system gives traffic agencies another way to do exactly that.

  1. Reynolds, C., et al., 2009 - The impact of transportation infrastructure on bicycling injuries and crashes: a review of the literature, Environmental Health, 8:47
  2. Hilkevitch, Jon. "City says Dearborn bike signals keeping cyclists in line." Chicago Tribune 10 June 2013: Web. 16 May 2016. http://articles.chicagotribune.com/2013-06-10/classified/ct-met-getting-around-0610-20130610_1_cyclists-signals-bike-traffic>

APTA Expo - Houston 2014

EMTRAC Distributor - NWS Traffic

July 21, 2015 - EMTRAC Systems is proud to announce the appointment of NWS Traffic, a Signal Group company, as our distributor in the following US states: Idaho, Colorado, Utah, Arizona, Texas, Tennessee, Georgia, Alabama, Florida, Illinois, Indiana, Ohio, Kentucky, North Carolina, South Carolina and Missouri.

Signal Group is a technology-driven company focused on shaping the future of intelligent traffic systems throughout North America and beyond. Signal Group holdings include NWS Traffic, Peek Traffic, Rayolite, and Teknotraffic. We look forward to NWS Traffic representing the EMTRAC Systems GPS/RF product line, and the new optical product line, in support of Emergency Vehicle Preemption and Transit Signal Priority.

The recently approved EMTRAC patents for Transit Signal Priority utilized on bus and rail applications will enhance both EMTRAC and NWS Traffic’s position within the marketplace. EMTRAC Systems will provide technical support and training to NWS Traffic staff as they strive to serve the marketplace.