Da Vinci Award

Carnegie Mellon Today, Winter 2008

In his 41 years as a history professor at Carnegie Mellon, Joel Tarr has never had a parking permit. He lives a short ten-minute walk from campus (“Eight minutes if I walk fast”), just off of Forbes Ave. Walking home one night in 1991, a car ran through the intersection in front of Margaret Morrison while he was crossing. Tarr woke up in an emergency room, but luckily without serious injuries. Fifteen years later, when a student was struck by a car and killed at an intersection just up the street from where he was hit, he wondered if there was a way to make crossings safer.

Every semester Tarr teaches two classes in which students research a policy problem for a government or non-profit client. Following the fatal accident, he had both classes focus on pedestrian safety in Pittsburgh. They pored through historical records, surveyed students and faculty, and worked with doctors at UMPC's Children's Hospital to produce a report identifying hazardous intersections. Tarr later testified before Pittsburgh city council in support of a Safe Streets Initiative, which included many of the report's recommendations, such as walk signals that show when a light will change.

The project was typical of the work he has done throughout his career- applying history to a technological issue and working with experts in a broad range of fields. It seems appropriate then that Tarr, who holds appointments in the Heinz School, the History department, and the Engineering and Public Policy department, recently received an award named after history's most famous renaissance man- the Leonardo da Vinci award, given by the Society for the History of Technology. The Society has 1500 members in 35 countries, and the da Vinci award is its highest honor.