Source standard
State-rule claims are based on state government, state legislature, state transportation department or another directly responsible government source. Federal material is used only when a federal rule actually applies; it is not used as a substitute for an unverified consumer state rule.
Rule records
Covered rules record the source URL, cited provision, measurement reference point, threshold operator, daytime and nighttime requirements, known maximum-projection treatment, manual-review conditions and the most recent verification date.
Uncertainty and exceptions
The site separates marker status, projection-rule status and manual checks. When wheelbase, last-axle position, total length, special cargo, commercial status, route restrictions or permits can affect the answer, the site calls for manual verification instead of presenting a general safety or legality verdict.
Commercial independence
Official sources remain visible alongside results. Product links do not change the legal measurement and do not determine the rule summary. Any future affiliate or sponsorship relationship will be disclosed.
Corrections and review cadence
Rules are rechecked before a state page is published and periodically thereafter. A page displays its most recent verification date. If an official source changes or a material error is identified, the affected result or page should be corrected before expanding similar content.