WASHINGTON — Thousands of people are killed or injured every year by drivers who have not reached the legal standard for being drunk but who have a reduced ability to see, make decisions or operate a vehicle, the National Transportation Safety Board said on Tuesday, and it recommended that the states reduce the allowable blood-alcohol concentration by more than a third, to 0.05 percent from 0.08 percent.

The current standard was established a decade ago at the instigation of Congress, and progress has stalled, the board said, with about 10,000 fatalities a year.

“There are at least 10,000 reasons to tackle this issue,” said Deborah A. P. Hersman, the chairwoman of the board. Foreign countries with stricter standards have had substantially more success, according to the board.

The board voted for a variety of recommendations. Some, like requiring that everyone convicted of drunken driving be required to install a Breathalyzer interlock in their car, which would prevent the vehicle from starting without an alcohol test, were focused on heavy drinkers and repeat offenders.