Requires vehicles with large loads or trailers to use right lane of highways.

This bill requires commercial vehicles with large loads extending above the vehicle body (such as trailers, semitrailers, or flatbed trucks) to use the right lane on highways. It applies specifically to motor-drawn vehicles and towed vehicles as defined by existing law, with exceptions only when entering or exiting the roadway from the left lane. Violations would result in a $500 fine per occurrence.