| 摘要 |
<p>PURPOSE:To inform a decelerating state to a following car at the time of deceleration made with a hydraulic brake to improve the safety of a vehicle by making control to turn on a brake lamp independently of the operation of an operating member when the deceleration of the vehicle exceeds a set value. CONSTITUTION:A vehicle, for example a crawler working car such as a wheel type hydraulic shovel or the like, can be run by driving a hydraulic motor through oil delivered from a hydraulic pump. On the other hand, when the oil delivered from the hydraulic motor again flows into the hydraulic motor, a valve makes throttling action to make a hydraulic brake function, and the output of an operating member 101 turns on a brake lamp 102. In this formation, a means 103 detects the running speed of the vehicle, and a means 104 computes the deceleration of the vehicle on the result of the above-mentioned detection. When the deceleration exceeds a fixed value, a means 105 controls the brake lamp 102 to be turned on independently of the output of the operating member 101.</p> |
