OHVD systems – Over-height vehicle height detection

Over-height vehicles collide with bridges and tunnels frequently. Due to their low clearance height, older bridges are now considered at risk of vehicular strikes. A bridge or tunnel strike occurs when a vehicle, typically a lorry or a truck (even vehicle cranes or oversized loads), tries to pass under a bridge or tunnel lower than its height and subsequently collides with the structure.​

Bridge and tunnel strikes are recurring events that cost thousands of euros in repairs, maintenance, and inspection. They create enormous damage and represent a real danger to road safety. For example, a vehicle stuck under a bridge affects traffic flow because it can close one or more lanes until it is removed.​

Therefore, Comark has developed several Overheight Vehicle Detection Systems (OHVD) solutions that alert drivers to maximum height limits to avoid collisions with infrastructure.​

Over-sized detection systems are significantly more cost-effective than repairing infrastructure and, most importantly, help prevent potential issues. They operate effortlessly: when the sensor detects that a vehicle is taller than the infrastructure, it sends an alarm to alert the driver to stop or take the nearest exit to avoid a collision with the obstacle. These sensors can detect vehicles traveling at both low and high speeds.​