I've not personally used this equipment, but some of my friends have expressed their satisfaction with it. According to one Trooper who is also pilot, it is the most accurate and user-friendly system he ever used.

Currently thirty-eight states use VASCAR, about half of them from aircraft as well, according to Tom White, national sales manager for Traffic Safety Systems, marketers of the device. The Maryland State Police recently installed it on six motorcycles and have been so encouraged they are planning a dozen more. The biggest users: North Carolina, Florida, Maryland, Indiana and Wisconsin.