Manual on Uniform Traffic Control Devices: Difference between revisions

Revision as of 05:59, 14 September 2024

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The United States is among the fewmajority of countries around the world that have not ratified the Vienna Convention on Road Signs and Signals (based primarily on European signage traditions), and the FHWA MUTCD differs significantly from the Vienna Convention. Apart from the 1971 effort to adopt several Vienna Convention-inspired symbol signs (as explained above), achieving worldwide uniformity in traffic control devices was never a priority for AASHTO because the number of motorists driving regularly on multiple continents was relatively small during the 20th century.<ref name="Johnson" />

[[Warning sign]]s (alerting drivers of unexpected or hazardous conditions) tend to be more verbose than their Vienna Convention counterparts.<ref name="Johnson" /> On the other hand, MUTCD guide signs (directing or informing road users of their ___location or of destinations) tend to be less verbose, since they are optimized for reading at high speeds on freeways and expressways.<ref name="Johnson" />