| 摘要 |
Device for monitoring the working hours of public service vehicles. Comprises a power supply 4; means of indicating 5 whether the device is in operation; means of indicating 6 whether the vehicle is inside or outside the work period; a distance sensor 11; a sensor in the means 2 for calculating the cost arising from its use; a clock- calendar 8; means of entering 12 the data corresponding to the work period; means 10 for comparing the work period entered; and means of control 7. According to another design, it comprises a power supply 4; means of indicating 5 whether the device is in operation; means of indicating 6 whether the vehicle is within the work period, a sensor, an oscillator 16, a meter 17, and means of control 7 which lock the means 2. Used for monitoring the working period. <IMAGE> <IMAGE>
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