State transportation agencies have many tools available with which to maintain pavements proactively. These include tools such as pavement management systems to track roadway conditions and life cycle cost analysis tools. NCHRP Synthesis 623: Wintertime Pavement Maintenance Practices , from TRB’s National Cooperative Highway Research Program, documents the current state DOT practices for the reactive pavement maintenance performed during the winter months when flexible and rigid pavements must be repaire…