- The FAST Act provides statutory front overhang exemptions (up to 4 feet front, 6 feet rear) specifically for auto transporters on the National Network.
- Bridge strike claims are categorized as preventable catastrophic events by insurance underwriters; digital height verification is critical.
- Keeping digital driver qualification files (DQF) synchronized with ELD logs inside your TMS ensures effortless DOT roadside audit compliance.
Understanding Auto Hauler Overhang & Dimension Exemptions
Auto transport equipment is engineered differently than standard dry freight tractor-trailers. Section 5520 of the federal FAST Act established specific nationwide dimension protections for automobile transporters, recognizing the unique configurations of stinger-steered car haulers.
Carriers operating on the National Network are permitted up to 4 feet of front overhang beyond the bumper and up to 6 feet of rear overhang beyond the rearmost axle, allowing an overall combination length of up to 80 feet (plus overhangs). However, dispatchers must remain vigilant regarding off-network state-specific restrictions.
The Hidden Threat: Bridge Heights & Over-Height Cargo
Commercial trucks in the eastern United States regularly encounter low rail bridges with clearances under 13'6". Placing a lifted pickup truck or commercial cargo van on the upper headrack or front overhang can easily exceed legal clearance heights.
Vianorda TMS provides automated height warnings during load construction based on vehicle specifications and roof clearance dimensions, alerting the dispatcher to re-slot tall vehicles to low-profile belly decks.
Automating Driver Qualification & Medical Card Tracking
Expired medical certificates and pending CDL renewals trigger immediate roadside out-of-service orders. Automated compliance notifications ensure your dispatch team is alerted 60, 30, and 7 days prior to any driver credential expiration.