When and why was right-on-red legalized across all 50 US states?

California legalized right-on-red in 1947; the federal Energy Policy and Conservation Act (EPCA) made it a condition of highway funding in 1975. All 50 states adopted by 1980. The intent was fuel conservation, yielding modest savings.

What is the pedestrian conflict risk of right-on-red turns?

Pedestrian conflict risk (likelihood of crash given a crossing): straight through: 1.0. Right-on-green (permitted turn): 1.7x. Right-on-red: 2.8x. Left-turn: 3.1x. Right-on-red nearly triples pedestrian collision risk at that intersection approach.

Which cities have banned right-on-red?

New York City banned right-on-red in 1971 and never repealed it. Washington DC implemented a ban in 2025. DC reported 21% crash reduction in the first five months of 2025 after the ban. NYC maintains the lowest pedestrian fatality rate per capita among large US cities.

What fuel savings did right-on-red actually deliver?

Modest: estimated 1-2% reduction in total fuel consumption. The benefit was transient (oil prices stabilized). The pedestrian cost has persisted for 50 years, making it a poor cost-benefit tradeoff from a public-health standpoint.

Are there cities considering right-on-red bans?

Yes. Cities tracking DC's early results (21% crash reduction Jan-May 2025) are re-evaluating. San Francisco, Seattle, and Boston are piloting bans in high-pedestrian-volume zones. Academic consensus favors DC-style restrictions in dense urban areas.

Right on Red. A 1970s gas-saving rule that quietly raised pedestrian risk.

Right-on-red was made standard across all 50 US states in the 1970s as a fuel-conservation measure. The fuel savings were modest. The pedestrian risk has been measured.

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