Background of United States Truck Size and Weight Limits
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Compilation of Existing State Truck Size and Weight Limit Laws Report to Congress Federal Highway Administration U.S. Department of Transportation 1200 New Jersey Avenue, SE. Washington, DC 20590 May 2015 Table of Contents Glossary of Terms ..................................................................................................................... iv Introduction: Purpose, Development Process, and Structure .................................................. 1 Background of United States Truck Size and Weight Limits ................................................... 4 The Federal-Aid-Highway Amendments Act of 1974 and the Federal Bridge Formula .................... 6 Typical Truck Configurations ...................................................................................................................... 9 Single Unit (SU) or Straight Trucks .............................................................................................................. 9 Combination Trucks ...................................................................................................................................... 9 Longer Combination Vehicles (LCVs) .......................................................................................................... 9 Exemptions to Federal Weight Limits ...................................................................................................... 12 “Grandfather” Provisions .......................................................................................................................... 12 The Intermodal Surface Transportation Efficiency Act (ISTEA), Freeze .......................................... 13 Appendix A: State Truck Size and Weight Laws ................................................................... 16 Appendix B: Summary of State Exceptions to Federal Truck Weight Limits ..................... 206 i Table of Exhibits Exhibit 1: State Truck Size and Weight Profiles ........................................................................................... 2 Exhibit 2: National Network Vehicle Size and Weight Standards ............................................................. 6 Exhibit 3: Federal Bridge Formula Weight Table ......................................................................................... 8 Exhibit 4: Common Vehicle Configurations in the U.S. Commercial Truck Fleet ............................... 10 Exhibit 5: Permitted Longer Combination Vehicles on the National Highway System: 2011 ............ 14 Exhibit 6: Chronology of Federal Size and Weight Laws, 1956-Present ................................................. 15 Exhibit 7: Common State Statute Exemptions ........................................................................................... 16 Exhibit 8: Summary of Alabama Truck Weight Limits for Vehicles in Regular Operations ............... 18 Exhibit 9: Summary of Alaska Truck Weight Limits for Vehicles in Regular Operations ................... 21 Exhibit 10: Summary of Arizona Truck Weight Limits for Vehicles in Regular Operations ............... 23 Exhibit 11: Summary of Arkansas Truck Weight Limits for Vehicles in Regular Operations ............. 25 Exhibit 12: Summary of California Truck Weight Limits for Vehicles in Regular Operations ........... 28 Exhibit 13: Summary of Colorado Truck Weight Limits for Vehicles in Regular Operations ............ 31 Exhibit 14: Summary of Connecticut Truck Weight Limits for Vehicles in Regular Operations ....... 33 Exhibit 15: Summary of Delaware Truck Weight Limits for Vehicles in Regular Operations ............ 35 Exhibit 16: Summary of District of Columbia Truck Weight Limits for Vehicles in Regular Operations ........................................................................................................................................................ 38 Exhibit 17: Summary of Florida Truck Weight Limits for Vehicles in Regular Operations ................ 40 Exhibit 18: Summary of Georgia Truck Weight Limits for Vehicles in Regular Operations ............... 43 Exhibit 19: Summary of Hawaii Truck Weight Limits for Vehicles in Regular Operations................. 46 Exhibit 20: Summary of Idaho Truck Weight Limits for Vehicles in Regular Operations .................. 49 Exhibit 21: Idaho Designated 129,000-pound Routes ............................................................................... 53 Exhibit 22: Summary of Illinois Truck Weight Limits for Vehicles in Regular Operations ................. 54 Exhibit 23: Summary of Indiana Truck Weight Limits for Vehicles in Regular Operations ............... 60 Exhibit 24: Indiana Heavy-Duty and Extra Heavy-Duty Highway Map ................................................. 64 Exhibit 25: Summary of Iowa Truck Weight Limits for Vehicles in Regular Operations .................... 65 Exhibit 26: Summary of Kansas Truck Weight Limits for Vehicles in Regular Operations ................ 69 Exhibit 27: Summary of Kentucky Truck Weight Limits for Vehicles in Regular Operations ............ 73 Exhibit 28: Summary of Kentucky Truck Weight Limits for Non-Divisible Loads ............................. 75 Exhibit 29: Kentucky Truck Weight Classification Map 2013 .................................................................. 76 Exhibit 30: Kentucky Coal Haul Highway System Map 2013 ................................................................... 77 Exhibit 31: Summary of Louisiana Truck Weight Limits for Vehicles in Regular Operations ............ 79 Exhibit 32: Summary of Maine Truck Weight Limits for Vehicles in Regular Operations .................. 85 Exhibit 33: Summary of Maryland Truck Weight Limits for Vehicles in Regular Operations ............ 89 Exhibit 34: Summary of Massachusetts Truck Weight Limits for Vehicles in Regular Operations .... 93 Exhibit 35: Summary of Michigan Truck Weight Limits for Vehicles in Regular Operations ............ 98 Exhibit 36: Summary of Minnesota Truck Weight Limits for Vehicles in Regular Operations ....... 101 Exhibit 37: Summary of Mississippi Truck Weight Limits for Vehicles in Regular Operations ....... 105 Exhibit 38: Summary of Missouri Truck Weight Limits for Vehicles in Regular Operations........... 109 Exhibit 39: Summary of Montana Truck Weight Limits for Vehicles in Regular Operations .......... 113 Exhibit 40: Summary of Nebraska Truck Weight Limits for Vehicles in Regular Operations ......... 115 Exhibit 41: Summary of Nevada Truck Weight Limits for Vehicles in Regular Operations ............ 118 Exhibit 42: Summary of New Hampshire Truck Weight Limits for Vehicles in Regular Operations ......................................................................................................................................................................... 121 Exhibit 43: Summary of New Jersey Truck Weight Limits for Vehicles in Regular Operations ...... 124 Exhibit 44: Summary of New Mexico Truck Weight Limits for Vehicles in Regular Operations ... 127 ii Exhibit 45: Summary of New York Truck Weight Limits for Vehicles in Regular Operations ....... 129 Exhibit 46: Summary of North Carolina Truck Weight Limits for Vehicles in Regular Operations 136 Exhibit 47: Summary of North Dakota Truck Weight Limits for Vehicles in Regular Operations . 139 Exhibit 48: Summary of Ohio Truck Weight Limits for Vehicles in Regular Operations................. 143 Exhibit 49: Summary of Oklahoma Truck Weight Limits for Vehicles in Regular Operations ....... 146 Exhibit 50: Summary of Oregon Truck Weight Limits for Vehicles in Regular Operations ............ 150 Exhibit 51: Summary of Pennsylvania Truck Weight Limits for Vehicles in Regular Operations ... 153 Exhibit 52: Summary of Rhode Island Truck Weight Limits for Vehicles in Regular Operations .. 161 Exhibit 53: Summary of South Carolina Truck Weight Limits for Vehicles in Regular Operations 163 Exhibit 54: Summary of South Dakota Truck Weight Limits for Vehicles in Regular Operations . 166 Exhibit 55: Summary of Tennessee Truck Weight Limits for Vehicles in Regular Operations ....... 169 Exhibit 56: Summary of Texas Truck Weight Limits for Vehicles in Regular Operations ............... 172 Exhibit 57: Summary of Utah Truck Weight Limits for Vehicles in Regular Operations ................. 178 Exhibit 58: Summary of Vermont Truck Weight Limits for Vehicles in Regular Operations .......... 181 Exhibit 59: Summary of Virginia Truck Weight Limits for Vehicles in Regular Operations ............ 184 Exhibit 60: Summary of Washington Truck Weight Limits for Vehicles in Regular Operations..... 189 Exhibit 61: Summary of West Virginia Truck Weight Limits for Vehicles in Regular Operations .. 193 Exhibit 62: Summary of Wisconsin Truck Weight Limits for Vehicles in Regular Operations........ 197 Exhibit 63: Summary of Wyoming Truck Weight Limits for Vehicles in Regular Operations ......... 203 iii GLOSSARY OF TERMS AASHTO American Association of State Highway and Transportation Officials Auxiliary Power Unit A type of “idle reduction technology” that powers accessories in commercial vehicles to avoid idling for long periods while stopped (such as during rest periods). Axle Spacing Method of computing distance between axles for bridge formula calculations. Typically measured from center of axle to center of axle between outermost wheel or wheel cluster. The image below identifies axle-spacing for a sample five-axle combination vehicle. A-Dolly and A- Train The A-dolly converter is towed from a Combinations single hitch at the centerline of