Law enforcement in designated Michigan counties would be able conduct roadside drug testing, including saliva tests, under a measure currently making its way through the state Legislature.

Senate Bills 207 and 434 have already passed the Senate, and are now being taken up by the House. 

Senate Bill 434 would let certain counties establish pilot roadside drug testing programs. The pilot projects would give police officers the authority to swab the mouths of drivers suspected of driving under the...