Cooperative Automated Transportation (CAT)

Roadway Safety in a Cooperative Automated World

Highway automation is not years away, or even days away. It’s here now, causing a number of state transportation agencies to react with initiatives related to preparing and supporting Connected Automated Vehicles (CAVs) on U.S. roadways.


Connected and Automated Vehicles (CAVs)

Cooperative Automated Transportation (CAT) deals with CAVs, which are vehicles capable of driving on their own with limited or no human involvement in navigation and control. Per the definition adopted by the National Highway Traffic Safety Administration (NHTSA), there are six levels of automation (Levels 0-2: driver assistance and Levels 3-5: HAV), each of which requires its own specification and marketplace considerations.


Vehicle-to-Everything (V2X) and Connected and Automated Vehicles (CAVs)

For traffic safety, vehicle-to-everything communications is the wireless exchange of critical safety and operational data between vehicles and anything else. The "X" could be roadway infrastructure, other vehicles, roadway workers or other safety and communication devices. ATSSA members are at the forefront of these technologies, and are working with stakeholders across new industries to see these innovations come to life.


Sensor Technology

CAVs rely on three main groups of sensors: camera, radar, and Light Detection and Ranging (LIDAR). The camera sensors capture moving objects and the outlines of roadway devices to get speed and distance data. Short- and long-range radar sensors work to detect traffic from the front and the back of CAVs. LIDAR systems produce three-dimensional images of both moving and stationary objects. 


For more information about ATSSA’s efforts on CAT and CAV’s and their interaction with our member products check out the resources below.




Resources

Median and roadside guardrails: An essential and effective countermeasure for RwD crashes

Research and studies show how devices are important components of integrated traffic safety system

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The guardrail did exactly what it was designed to do: The guardrail’s end terminal absorbed the energy of the impact and deflected the guardrail away from the vehicle.

Pedestrian safety in the United States

How public agencies are using technology to prevent fatalities and injuries on our roadways

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Pedestrian safety has become a key initiative for many public agencies in recent years. Last year, the National Transportation Safety Board (NTSB) Office of Highway Safety announced they conducted an investigation of 15 crashes that had resulted in pedestrian fatalities.

Congressman saved by median barrier in Tennessee after roadway departure crash

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There are also countless stories from people whose lives have been saved by a median cable barrier or roadside guardrail like Congressman John J. Duncan, Jr., whose life was positively impacted by the lifesaving presence of a guardrail during a serious crash in Knoxville, Tennessee, on Oct. 23, 2009.

ATSSA to address challenges state DOTs face with bid specification enforcement

Bid Specification Enforcement Open Forum will be held at 49th Annual Convention & Traffic Expo

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During ATSSA’s 49th Annual Convention & Traffic Expo in Tampa, Florida, Feb. 8-12, the association will hold an open forum on bid specification enforcement.

‘ITS Solutions for Bicyclists’ tour highlights how sensor data transmits safety messages to riders

Integrated technology featured at 2018 ITS World Congress

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In Copenhagen, Denmark during the 2018 ITS World Congress, a tour showed participants how cyclists on electric bicycles were provided with dynamic information based on real-time sensor data via Variable Message Signs (VMS).

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