Applied Information Transportation Technology

Category: Preemption

How a Connected Emergency Vehicle Preemption System Works

How the Glance Preemption System Works

When responding to an emergency, traffic congestion and red lights aren’t merely an inconvenience for first responders; they cause critical delays when helping those in need. The Glance Preemption and Priority System uses a combination of hardware and software, working seamlessly together, to clear the path and get firefighters and first responders to their destination faster and more safely.

In this post, we’ll take a look at how the Glance Emergency Vehicle Preemption System works, what is included, and what … Continue Reading

How to Reduce Response Times with a Preemption System


Preemption Systems

Most traffic lights feature a fixed green light sequence that doesn’t take into account emergency vehicles. While emergency vehicles are legally permitted to pass through a red light with sirens active, there’s always a risk that another driver will not notice them and strike the vehicle, making these intersections dangerous for everyone.

Preemption systems are designed to help emergency vehicles get where they need to go with minimal interference by automatically changing traffic lights to let them through. Unfortunately, … Continue Reading

Where emergency vehicle preemption will be in five years

Where emergency vehicle preemption will be in five years

Technology is rapidly changing the transportation industry, and emergency vehicle preemption systems are no exception. Optical-based preemption technology is being replaced by new innovations, and the progress of change seems to be picking up speed.

As wireless and cellular communications grow, so will the sophistication of preemption systems. The next five years will see exponential advancements in connection and inter-connectivity.

New levels of connection

Emergency vehicles will be connected to, and interact with, the transportation infrastructure in new and unthought … Continue Reading

How does the Glance Preemption and Priority System Work?

Preemption and priority systems provide emergency vehicles with green lights, so they arrive at the scene of an incident faster and more safely. While this technology has been in existence for a number of years, the Glance system from Applied Information utilizes a new generation of innovations to reduce arrival times while increasing safety. Here’s how the Glance preemption and priority system works.

Glance Emergency Vehicle Preemption and Priority System

Getting Connected

The Glance system is fundamentally different from older radio-based or line-of-sight systems. The solution seamlessly … Continue Reading

How smart cities are connecting preemption and priority systems to connected vehicles

How smart cities are connecting preemption and priority systems to connected vehicles

When preemption meets connectivity, the result is not only a quicker route for emergency service vehicles, it means a safer one, too. While preemption and priority technology has continually evolved, the addition of a cellular connection is a game-changer for the traffic and transportation industry.

Cellular connection brings wide-spread benefits

Cellular connectivity not only allows you to pinpoint the location of an emergency vehicle, but it also offers the ability to clear traffic ahead of their arrival at the upcoming … Continue Reading

Three things to do before your city considers a preemption system

Three things to do before your city considers a preemption system

Preemption, in one form or another, has been in existence for 40+ years. It has transitioned from optically based to GPS and has included sirens, sound activated systems, and even switchboards that connect circuits across town. In all cases, these solutions address the challenge of getting emergency vehicles to the scene as quickly and as safely as possible.

When city leaders debate the installation of a preemption system, there are several things to consider while making a decision, especially if … Continue Reading

Video: See the Marietta Connected Vehicle Preemption & Priority System in Action

Video: See the Marietta Connected Vehicle Preemption & Priority System in Action

Traffic signal preemption requests are critical to ensuring that emergency vehicles are able to arrive on scene as fast as possible. These systems ensure that the traffic signals are prepared for the emergency vehicle and ensure safe passage through the intersection. In this video you’ll see a live demonstration of how the technology is working in Marietta, GA.… Continue Reading

How adaptive preemption is used to address congested intersections

How adaptive preemption is used to address congested intersections

Preemption systems are designed to automatically process a request for a green light as an emergency vehicle approaches a signalized intersection, so the emergency vehicle is given the right of way. This technology allows for faster response time and safer travel.

Most standard GPS preemption systems rely on a static, pre-set timing plan, which typically requests a green light 30 seconds prior to the arrival of the emergency vehicle at a traffic signal. The plans are based on distance, which … Continue Reading

How preemption systems keep firefighters and the public safe

Fire departments are continuously looking at ways to deliver emergency services more efficiently. In the past, the best solution for decreasing response time was to increase the number of fire stations and strategically locate them across the city. This entails building new stations, hiring more firefighters, and purchasing new equipment. While effective, this approach quickly adds up to a substantial investment.

Leveraging New Preemption Systems

Many cities and municipalities are turning to a new generation of preemption systems as a … Continue Reading

Upgrading a preemption system from Optic to GPS

First-generation traffic preemption systems were primarily designed as optical-style systems. These solutions rely on sensors at each intersection being triggered by strobe light emitters on emergency and transit vehicles. While these initial types of installations were a step in the right direction, they offered little flexibility and came with a variety of challenges.

With advancements in technology, many cities, public safety, transit, and transportation departments are moving away from original, optical-based systems and to the new and more intelligent GPS-based … Continue Reading