When a speed limit sign is posted on a multi-lane highway, you?

The posted speed limit sign on a multi-lane highway indicates the maximum safe speed you are legally allowed to drive under ideal conditions. This means that option B is correct, as you may drive at the speed indicated on the sign, provided it is safe to do so considering traffic, weather, and road conditions.

Understanding the purpose of speed limit signs is crucial for maintaining safe driving practices. Following the speed limit helps to ensure the safety of all road users, reduces the likelihood of accidents, and can help in avoiding penalties for speeding violations. Driving at the posted limit allows for smoother traffic flow and is especially important in multi-lane environments where faster speeds may be common.

Being aware of speed limits reinforces responsible driving behavior and adherence to traffic laws, contributing to overall safety on the road.