| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a traffic safety device capable of preventing a self-damaged accident due to excess speed or the like or an accident following the excess speed and to provide a traffic safety system using the device. SOLUTION: The traffic safety device 1 arranged on a curve or the like detects the approaching speed and the distance between vehicles Ca, Cb with a Doppler radar, displays a warning such as 'speed down' on electric display boards 3a, 3b and superposes data on a radar signal and an on-vehicle device receives the superposed data and generates a warning by a synthetic voice or the like. The warning is given at the timing of starting speed reduction in accordance with a detected vehicle speed.</p> |
