What does a white sign saying "stay in the right lane" indicate?

A white sign saying "stay in the right lane" primarily serves to guide drivers regarding the appropriate lane to use based on their speed relative to other vehicles on the road. It indicates that drivers should remain in the right lane if they are driving slower than the prevailing traffic. This helps maintain a smooth flow of traffic and reduces the likelihood of congestion or accidents caused by slower vehicles obstructing faster-moving traffic in the left lanes.

This instruction is particularly important on multi-lane roads where different speeds can be expected. When slower drivers stay in the right lane, it allows faster vehicles to use the left lane for safe overtaking, promoting overall road safety and efficiency.

Understanding this regulation helps drivers make informed decisions, contributing to safer road conditions for all users.