Moving Day! A big rig truck hauls a modular mobile home that will be parked and become a home in a neighborhood. Due to the oversize, wide loads exceed the standard or legal size and weight limits for a truck to convey on a specified portion of road or highway. A Pilot Car drives behind, to alert motorists that an oversized load is ahead, and sometimes a Pilot Car in front, to guide the big rig to avoid getting into a tight spot with the wide load behind.