The principle of carpooling, the driver can choose the car dispatch order
How to be a competent billing clerk
The most important carpooling is to plan the route in advance! Choose a familiar route.
Inform passengers in advance that they need to make several orders to avoid complaints.
If you cannot arrive at the scheduled time for dispatch, you need to call the passenger in time and explain the reason to avoid complaints. If you are maliciously complained in time, you can also check the time of the call to the passenger. (It should be noted that you should stop at the side of the road and call safety first!)
You can broadcast traffic radio in the car to grasp the facts of the road!