This bill revises existing laws concerning agricultural vehicles in Montana, specifically focusing on the behavior of motor vehicles when approaching these vehicles on highways. It mandates that operators of motor vehicles must slow down to the speed of the agricultural vehicle when traveling in the same direction and may only pass when it is safe to do so. Additionally, when approaching an agricultural vehicle from the opposite direction, drivers are required to reduce their speed to half of the posted speed limit. The bill also stipulates that agricultural vehicle operators must pull over at safe turnouts when a line of vehicles forms behind them, and they may use the shoulder of the highway if it is safe to do so.

The bill introduces new definitions for "agricultural vehicle," "highway," and "motor vehicle," clarifying the types of vehicles included under these terms. The definition of "agricultural vehicle" encompasses various types of farm equipment, including tractors and implements of husbandry. The changes aim to enhance safety on highways by ensuring that both motor vehicle operators and agricultural vehicle operators adhere to specific protocols when sharing the road.