LINCOLN, Neb. (AP) — Farmers rumbling down the road in feed trucks are a common sight in Nebraska, but they may be breaking the law.

Farm implements fall into a legal gray area on the state’s roads, creating confusion among farmers and ranchers and forcing some to pay thousands of dollars in fines.

Nebraska lawmakers will wade into the debate during a legislative hearing Monday. Sen. Jim Smith of Papillion has introduced a bill that would exempt several types of farm equipment from the state’s weight and load restrictions.

The rules are designed to keep heavy vehicles from causing damage. But the Nebraska Farm Bureau Federation and the Nebraska Cattlemen Association say the rules haven’t kept pace with farming equipment and trucks that have grown larger and heavier.