Analysis of crash data from a road demonstration program in Michigan found that low-cost intersection improvements had a significantly greater safety benefit for drivers 65 and older than for drivers 25 to 64, AAA announced today.

According AAA Michigan’s “Road Improvement Demonstration Program” (RIDP) reduced the rate of senior driver injuries at thirty high-crash intersections in Detroit since 1997, by more than twice the rate of injury reduction for 25-64 year old drivers. In addition, the rate of left turn collisions involving senior drivers dropped a staggering 73 percent when a left turn signal was added to an intersection.

On the heels of these dramatic results, AAA is strongly urging U.S. House and Senate conferees to approve a federal transportation bill that will enable states to make senior friendly road improvements – such as intersection safety programs and investments in better signage and pavement markings.

The AAA RIDP is a public/private partnership designed to enhance traffic safety by reducing the frequency and severity of crashes at high-risk urban intersections. The program relies on low-cost traffic safety engineering enhancements, such as re-timed traffic signals, larger traffic lights and dedicated left turn lanes. Since 1996 AAA Michigan has partnered with state, county and city governments in Detroit and Grand Rapids to provide seed money for these low-cost safety improvements. Over 200 intersections have now been completed in Michigan. In 2004 AAA Wisconsin launched a similar RIDP effort in the Milwaukee area.

Analysis of the safety improvements also showed a statistically significant reduction in the total number of crashes (25 percent) among all drivers and a reduction in the total number of injuries (40 percent) at the first 84 intersections improved in Detroit and Grand Rapids. These improvements will benefit society more than $100 million in medical care, emergency services, property damage, and productivity losses due to crashes over the next 15 years, according to AAA.

People over 65 are the fastest-growing population in the United States, according to government statistics. By 2020, there will be more than 40 million licensed drivers ages 65 and older. Senior crash fatality rates have climbed while overall fatality rates have remained stable since 1991. Senior drivers have the highest crash death rate per mile of everyone except teenagers.