When a driver is being passed by a vehicle on their left, they should decrease their speed slightly and stay centered in their lane. When the vehicle has safely passed and is ahead of them, they should continue at their normal speed. If the driver finds that they are being passed on the right by many vehicles, they should move into the right lane and allow them to pass on the left.
For example, if you are driving on a two-lane highway and another vehicle passes you on the left, you should decrease your speed slightly and keep to the right. This will help the other driver to pass safely.
