Vehicle Size Restrictions

Road agencies impose commercial vehicle weight restrictions to protect local roads from the damage caused by heavy loads. Many cold weather states impose different spring weight restrictions due to spring thaw and weakened pavement conditions, which can lead to increased damage to roadways during this time. Agencies also impose width and length restrictions to accommodate bridge heights and varying roadway widths. Agencies must consider many factors for these restrictions, including the need to balance protecting the roads with the access and mobility needs of road users.

This section provides guidance on selecting appropriate vehicle weight and size restrictions, as well as effective enforcement practices.