SAN FRANCISCO—California high-speed rail officials say the agency would realize even greater profits if a one-way ticket from San Francisco to Los Angeles were set at $105 instead of an existing proposal for $55.

The new price is floated in a business plan released Monday by the California High-Speed Rail Authority.

Deputy Director Jeff Barker says the authority is a long way from setting the actual price, but wanted to explore the higher-cost alternative.

The December 2009 business plan says the higher fare would reduce high-speed rail ridership by several million passengers a year—to 41 million in 2035. But that would also reduce maintenance and operations costs.

Barker said the authority could explore even more pricing alternatives in the future.

The state expects to complete construction on the line by 2020.