A series of construction work-zone crashes on Massachusetts roadways—all allegedly involving drunk drivers—prodded state officials to launch a federally funded impaired-driving enforcement campaign in August through Labor Day. “Drive Sober or Get Pulled Over” includes an impaired-driving public-education campaign and increases police patrols in about 150 cities and towns. The effort comes after five crashes injured or killed road workers this summer. Between 2011 and 2014, the state saw 22 fatal work-zone crashes, officials say. Nationally, there were 669 fatalities in work-zone crashes in 2014.