Subtract the end time from the start time. For example, Xiaoming left home at 7: 30 in the morning and arrived at school at 8: 20. As the title says, the end time is 8:20 and the start time is 7:30. As can be seen from the formula, there is not enough time on the minute bit, so we need to borrow one bit forward, and one hour is equal to 60 minutes. The process is as follows:

Precautions:

(1) "Vehicle" refers to motor vehicles and non-motor vehicles.

(2) "Motor vehicle" refers to a wheeled vehicle that is driven or towed by a power plant and travels on the road for people to ride or transport articles and carry out special engineering operations.

(3) "Non-motor vehicles" refer to vehicles driven by human or animal power and running on roads, as well as disabled motorized wheelchairs, electric bicycles and other vehicles whose design maximum speed, no-load weight and overall dimensions meet the relevant national standards.