It appears that a segment of Highway 42 in Door County is a candidate for retrofit rumble strips. The Department of Transportation announced Wednesday that the strips will be installed on 500 miles of rural state highway over the summer, beginning this month. The strips, which will be ground into the pavement along the center line, are intended to alert drivers that they are about to cross into the other lane of traffic. National research shows that adding shoulder rumble strips can reduce death or injury from single vehicle highway run-off crashes by 29%, while center line rumble strips reduce head-on & side swipe crashes by 44%. The state wide work is expected to be completed this fall at a cost of $3.5 million.