Relating to the route designation for the issuance of a permit for the movement of oversize and overweight vehicles in certain counties.

HB 3678 designates specific routes for permits allowing oversize and overweight vehicles to move between border crossings and ports in Cameron County and surrounding areas. It specifies exact paths, such as using State Highways 48 and 4 or U.S. Highways 77/83 from the Gateway International Bridge to the Port of Brownsville, and routes via Farm-to-Market Roads 509/106 for Harlingen port entrances. The bill directly affects trucking companies and logistics operators transporting heavy equipment across the Texas-Mexico border. It amends Transportation Code Section 623.219 to standardize permit routes, taking effect September 1, 2025.