Introduction - If you have any usage issues, please Google them yourself
Billing function can be realized. Start start charging car, the first show starting price (starting fee of this design is 7.00 dollars), car moving within 3 km, only charge the prices starting at 7.00 yuan. After the car traveled over 3 km, 2 yuan per km, the fare in turn accumulate. When the total cost, or more than 40 yuan, the per km charge 4 dollars. When a red light or stop waiting for customers when needed, according to the time of billing, billing unit price charged for each 1 per 20S