A VASCAR unit uses a stopwatch and a simple computer. An operator records the moments that a vehicle passes two fixed objects (such as a white circle or square painted on the road) that are a known distance apart. The … See more

VASCAR is known to be used where radar or LIDAR is illegal, such as some jurisdictions in Pennsylvania. Many police vehicles in the United Kingdom are fitted with a device, especially those used for traffic enforcement. The system is … See more

VASCAR was invented by Arthur Marshall, a real-estate investor living in Richmond, Virginia in 1966. He was inspired to create the device after watching a police car driving dangerously trying to pace a speeder. The original version of the device was entirely … See more

VASCAR relies on the accuracy of the patrol vehicle's speedometer drive (generally located within the vehicle transmission) for determining the distance traveled, using an odometer within the VASCAR system itself. Recently-purchased law … See more

The VASCAR system has one major advantage over the RADAR and LIDAR systems also used for determining speed, in that it is not necessary to be in (or close to) the line of travel of the target vehicle. RADAR and LIDAR clock speed using the Doppler effect, … See more

While the name VASCAR is no longer trademarked, VASCAR and VASCAR V PLUS are trademarked in South Africa by Signal Systems (Pty) Limited. Power Systems & Controls holds the trademark to VASCAR-plus. Other companies sell similar, though non … See more

• Automatic number plate recognition
• SPECS (speed camera) See more