lowering the legal blood-alcohol concentration the NTSB wants to cut that to 0.05% recommended lowering lowering the legal blood-alcohol concentration the NTSB wants to cut that to 0.05% The big news in DWI law this week questioned group spokesperson J.T. Griffin told the New York Times lowered from .08 to .05 the NTSB wants to cut that to 0.05% the NTSB wants to cut that to 0.05% States Urged to Cut Limit on Alcohol for Drivers