日本富士辆与前面的车距小于安全值时,报警器就会通天有限公司根据车距的大小给出两种不同的信号,一是最近生产一种警告信号,二是危险信号。用于车距报令这种报令器的外形尺寸是140毫米X的激光报警105毫米X70毫米（长X宽X高）,重量约为器,这种报警1公斤,装在轿车上能测量的车距 Japan’s Fuji vehicles in front of less than the safety value of the car, the alarm will be limited according to the size of the vehicle is given two different signals, one is the recent production of a warning signal, the second is a danger signal. For vehicles from the newspaper reported that the size of this alarm is 140 mm X laser alarm 105 mm X70 mm (length X width X height), weight about the device, this alarm 1 kg, installed in the car to measure Car distance