This bill revises existing laws concerning agricultural vehicles in Montana, specifically focusing on the behavior of motor vehicles when approaching these vehicles. It mandates that operators of motor vehicles must slow down to match the speed of an agricultural vehicle traveling in the same direction and may only pass when it is safe to do so. Additionally, when approaching an agricultural vehicle coming from the opposite direction, drivers must reduce their speed to half of the posted speed limit. The bill also requires operators of agricultural vehicles to pull over at safe turnout areas when a line of vehicles forms behind them, allowing those vehicles to pass.

The bill introduces new definitions for "agricultural vehicle," "highway," and "motor vehicle," clarifying the types of vehicles covered under this legislation. The term "agricultural vehicle" includes various types of farm equipment, such as tractors and implements of husbandry. The language of the bill replaces previous definitions and clarifies the responsibilities of both motor vehicle operators and agricultural vehicle operators to enhance safety on highways.