EVALUATION OF A SAFETY PROJECT-REPLACEMENT OF BI-DIRECTIONAL CROSSOVER WITH PAIR OF DIRECTIONAL CROSSOVERS

AN EVALUATION IS MADE OF ACCIDENTS RESULTING FROM (1) THE CLOSING OF THE MEDIAN CORSSOVER ON A TRUNKLINE, US-10 (WOODWARD AVE.) AT A TEE INTERSECTION OF A MINOR ROAD, (OPDYKE RD.), AND (2) THE CONSTRUCTION OF TWO DIRECTIONAL CROSSOVERS, ONE NORTHWEST AND ONE SOUTHEAST OF THE INTERSECTION. THE ROADWAY AT THE APPROACHES TO EACH CROSSOVER WAS WIDENED ON THE MEDIAN SIDE TO PROVIDE FOR PROTECTED LEFT-TURN LANES. THIS $67,000 SAFETY PROJECT CONTRIBUTED TO THE REDUCTION IN THE TOTAL NUMBER OF ACCIDENTS FROM 34 TO 13 (62%) IN A ONE-YEAR PERIOD. THIS REDUCTION, ACCORDING TO NATIONAL SAFETY COUNCIL CRITERIA, AMOUNTED TO A SAVINGS OF $47,300 TO THE MOTORING PUBLIC IN THE FIRST YEAR. /AUTHOR/