| 摘要 |
<p>An apparatus for measuring the reaction length for drivers of motor vehicles has a firing device (1) which is electrically connected to the cable of the vehicle that upon the activation of the brake lights the brake light. The firing device (1) includes at least one paint cartridge which upon the activation of the brake is fired and causes a marking of the road way. The firing device (1) preferably includes two paint cartridges and in the circuit connected to said cable of the vehicle is arranged an operating unit (17). By means of a trigger button (18) on the operating unit (17) one of the cartridges is fired at a certain moment when hinder or danger is pre-supposed to suddenly appear and thereafter the firing of the other cartridge takes place when the brake light is lit by the activation of the brake.</p> |
