San Francisco and California Ballot Backstory · Why is this on my ballot?
Prop G: summary
Allowing Private Vehicles on the Upper Great Highway in Sunset Dunes Park
Mark your own choices here. You may bring this sheet into the voting booth.
A YES vote means
After approvals, including Coastal Act permits, private vehicles could use the Upper Great Highway Monday 4 a.m.–Friday 6 p.m., except holidays, closing Sunset Dunes Park.
A NO vote means
Sunset Dunes Park stays as it is: the former Upper Great Highway stays closed to private vehicles at all times.
Both ovals are empty on purpose. The choice is yours.
If it fails
Nothing changes if it fails
If Prop G fails, the park stays as it is now. Sunset Dunes Park, the old Upper Great Highway, stays closed to private vehicles at all times. Emergency, government and park shuttle vehicles can still use it.
Why it’s on the ballot now
Sunset Dunes Park replaced the Upper Great Highway between Lincoln Way and Sloat Boulevard. The park is closed to private vehicles at all times.
Prop G says in 2022, after a COVID-era closure, the Board of Supervisors found it would be appropriate to restrict private vehicles on the Upper Great Highway at certain times.
Supporters say a weekday-cars, weekend-park setup was in place from 2021 to 2024. Opponents say voters approved Prop K in November 2024 to close the road to cars.
Supporters say traffic injuries in Sunset neighborhoods have risen since the closure. Opponents say crashes are down since the park opened.
Prop G reached the ballot by petition. The Department of Elections certified enough valid signatures on July 23, 2026.
The money
If the road is open to private vehicles, the Controller estimates about $9.8 million one-time, including $8.8 million for signals at 8 intersections and about $750,000 to remove park elements and restore roadway. Yearly costs could rise $500,000–$1.9 million, including about $100,000 to $1.5 million for sand removal and dune reshaping. The Controller also expects the park to need fewer weekday staff and less upkeep. That would cut costs and free staff for other work. For context, park staffing now costs about $300,000 a year. A coastal permit and Sloat redesign could add costs.
Needs a simple majority (50% + 1) to pass Some measures need 55% or two-thirds of votes to pass. This one needs only a simple majority.Who bears the cost
City government (the General Fund)
If the road is open to private vehicles, the Controller estimates about $9.8 million in one-time capital costs and about $500,000 to $1.9 million more each year, paid by City government.
The strongest case for and against
Strongest case for
Supporters, including retired SFPD Commander Richard Corriea, say traffic injuries in Sunset neighborhoods have risen sharply since the Great Highway closed. They say weekday car access would help keep traffic off neighborhood streets. They say the road would stay a car-free park on weekends and holidays, and walking paths, bike lanes and the beach would stay open every day. They call it a return to the compromise in place from 2021 to 2024. Paid arguments in favor say 14,000 to 20,000 cars used the road each day before the closure. Paid signers include Supervisor Alan Wong, the Chinese American Democratic Club, the SF Taxpayers Association and Richmond District residents.
Strongest case against
Opponents, including Senator Scott Wiener, five Supervisors and the Sierra Club, say Prop G would remove the playground, skate park and seating, and end the nearly 60% of park visits that happen on weekdays. They cite the cost: nearly $10 million, plus up to $1.9 million a year. They say three independent analyses found traffic impacts are minimal, with the most affected trips 2 to 4 minutes longer at rush hour. They say Prop G would end future park improvements, and that Sunset Dunes is the best plan for adapting to climate change and sea-level rise. Paid signers include SPUR, Outer Sunset Neighbors, the Sunset Merchants Association and Walk San Francisco.