Sources and references

These are the main sources used to write and check the guides on this site.

United Kingdom

• The Highway Code (GOV.UK), especially Rule 171 on stop junctions and the typical stopping distances table
• Know Your Traffic Signs (Department for Transport)
• Traffic Signs Regulations and General Directions (the stop sign is diagram 601.1)
• DVLA endorsement codes, including TS30 (failing to comply with a stop sign)
• DVSA guidance on how the practical driving test is marked

United States

• Federal Highway Administration: Manual on Uniform Traffic Control Devices (MUTCD) and its history
• California Vehicle Code §22450 (stop signs) and California court fee schedules
• State DMV driver handbooks

International

• Vienna Convention on Road Signs and Signals (1968), sign categories A–H
• NSW Road Rules 2014, rule 67 (Australia)
• NRMA guidance on stopping at stop signs

History

• FHWA MUTCD history: first stop sign in Detroit (1915) and the 1954 change to red
• Historical accounts of the 1914–1915 Detroit signs

Content last reviewed 30 October 2026. Rules and fines change, so always check the official source for your location.