The lower alcohol-content threshold was one of nearly 20 recommendations aimed at reducing drunken driving made by the board, including that states adopt measures to ensure more widespread use of use of ignition devices.

WSJ: U.S. Board Urges 0.05 Drunk-Driving Threshold

But the recommendation to lowering the alcohol content threshold to .05 is likely to meet strong resistance from states, said Jonathan Adkins, an official with the Governors Highway Safety Association, which represents state highway-safety offices.

WSJ: U.S. Board Urges 0.05 Drunk-Driving Threshold