When is it permissible to drive in the left lane on a multi-lane highway?

Driving in the left lane on a multi-lane highway is generally permissible when you are passing another vehicle or when the right lane is blocked. The left lane is typically designated for passing and allows for quicker movement around slower vehicles in the right lane. This helps maintain traffic flow and can reduce congestion. When you need to pass a slower-moving vehicle, using the left lane is appropriate provided it is safe to do so.

Additionally, in situations where the right lane is blocked due to obstacles, construction, or other hazards, using the left lane can be a necessary means of maintaining progress on the road. However, always be vigilant and ensure that the left lane is clear and safe to use for both passing and navigating around blockages.