Practical, original driver resources
Rig Toolbox is an independent website that makes driving calculations, study practice and everyday trucking information easier to use on a phone or computer.
How content is created
Guides, explanations and practice questions are written in original wording for Rig Toolbox. Practice questions are designed to teach the underlying idea rather than copy an official examination. Government handbooks and agency pages are used as primary reference points when a topic depends on current rules.
Accuracy and official sources
Driver licensing, road rules and commercial-vehicle requirements can change and may differ by state, province, territory or country. Relevant pages identify their scope and link to official authorities whenever practical. Official laws, handbooks, road signs, licensing agencies, carrier procedures and professional instruction always take priority over this website.
Independent practice—not an official exam
Rig Toolbox is not affiliated with a licensing authority and cannot issue a licence, certificate or test result. Scores are study feedback only. UK theory and Australian driver-knowledge practice include road-safety and sign questions, but they do not reproduce or replace the official tests.
Calculators
Calculators use the values entered by the visitor and provide estimates. Fuel prices, taxes, pay agreements, road restrictions and operating conditions may change the real result.
Corrections and updates
Pages are reviewed when a meaningful source change is identified. If you notice an error, outdated link or unclear explanation, use the contact page and identify the page and correction. Substantive corrections are made as soon as they can be verified.
Advertising independence
Advertising helps support free access. Advertisers do not write practice questions, control editorial conclusions or receive a promise of favourable coverage.