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MassDOT has installed around 90 wrong-way driving detection systems across the state since June and plans to have another 40 up and running by the end of the year, officials said on Monday.

The state began upgrading the wrong-way driving prevention systems following a series of deadly wrong-way crashes, including a crash that killed Mass. State Police Trooper Kevin Trainor in May.

Applied Information’s C-V2X roadside unit has received OmniAir certification, marking an important milestone in connected vehicle technology and reinforcing the company’s commitment to reliable, interoperable vehicle-to-everything (V2X) communication solutions.

The Greenville Fire Department has equipped traffic signals across the city with emergency vehicle preemption (EVP) devices designed to speed up emergency response times.

When emergency vehicles approach an intersection with active lights and sirens, the new system detects the vehicle and automatically transitions the traffic light to green to clear a path.

Engineers say the technology is deployed across all city-maintained intersections to help fire trucks navigate traffic gridlock. By securing a green light in the direction of travel, the department aims to reduce travel times during urgent calls.