DETROIT (AP) — The National Transportation Safety Board is recommending that all new vehicles in the U.S. be equipped with blood alcohol monitoring systems that can stop an intoxicated person from driving.

The recommendation, if enacted by the National Highway Traffic Safety Administration, could reduce the number of alcohol-related crashes, one of the biggest causes of highway deaths in the U.S.

The new push to make roads safer was included in a report released Tuesday about a horrific crash last year in which a drunk driver collided head-on with another vehicle near Fresno, California, killing both adult drivers and seven children.

NHTSA said this week that roadway deaths in the U.S. are at crisis levels. Nearly 43,000 people were killed last year, the greatest number in 16 years, as Americans returned to roads after pandemic stay-at-home orders.

Early estimates show fatalities rising again through the first half of this year, but they declined from April through June, which authorities are hoping is a trend.

The NTSB, which has no regulatory authority and can only ask other agencies to act, said the recommendation is designed to put pressure on NHTSA to move. It could be effective as early as three years from now.