What is the general toll standard for expressways?

The charging standards are as follows:

2 tons of small cars, including trucks with less than 2 tons and buses with less than 20 seats, are 0.45 yuan/km; 2 tons to 7 tons of medium-sized cars, including 7 tons of trucks, 2 1 passenger car with more than 50 seats 0.90 yuan/km; 7 tons to 20 tons of large vehicles include 20 tons of freight cars, 5 1 passenger cars, 1.462 yuan/km sleeper buses; Extra-large trucks, trucks over 20 tons, container trucks 2. 138 yuan/km.