STC Executive Director

2 Highway is an essential facility that led to both economic success and quality of life. Maintenance is necessary to ensure that highway will able to continue to carry out its functions. Pavement maintenance is essential to ensure good riding quality and avoid the happening of congestion, air pollution, and especially traffic accident. Improving road safety through proper pavement engineering and maintenance is one of the major objectives for pavement management system. This study utilized the Tennessee Pavement Management System (PMS) and Accident History Database (AHD) to investigate the relationship between accident frequency in highway segment and pavement distress variables. Focusing on four urban interstates with asphalt pavements, divided median types, and 55 mph speed limits, twenty-one negative binomial regression models for various accident types were calibrated with different pavement distress and condition variables including Rut Depth (RD), International Roughness Index (IRI), and Present Serviceability Index (PSI). The modeling results indicate that the RD models did not perform well, except for accidents at night and accidents under rain weather conditions; whereas, IRI an