Tap a state. Get its rules.

No — 47 of the 48 contiguous states set no overall combination length limit for a truck-tractor pulling a semitrailer, because federal law bars them from imposing one (23 CFR 658.13(b)(3)). The trailer is what triggers the permit: 53' in most states, up to 59'6" in Kansas, Louisiana and Oklahoma, 59' in Texas and 60' in Wyoming. Seventeen states measure the trailer with the load on it, so an overhang counts inside that figure. Alabama and Nevada instead cap front and rear overhang combined — 5' in Alabama, 10' in Nevada — so a short overhang at both ends can break the limit even when neither end does on its own. Overall length only starts to matter at the escort thresholds. North Dakota is the one state with a real overall cap, at 95'.

All 48 contiguous US states. Alaska, Hawaii and Canada are not served. We also file the county and city permits your route needs where a state permit stops at the state-highway line.

Each state’s own DOT rules and statutes, read directly rather than copied from another permit site, and carrying the date the rule took effect. All 48 are verified. Where a state publishes a limit we do not show, it is because that state does not define one — not because we skipped it.

No. 13'6" is the ceiling in 26 states, 14'0" in 20, and 14'6" in only Colorado and Nebraska. A 14'0" load is legal in 22 states and needs a permit in 26.

Yes, and this is the detail most guides miss. Alabama, for example, requires a front escort for a 12–14 foot wide load on a two-lane road but a rear escort on a multilane — the warning has to reach traffic coming at you in one case and behind you in the other.