Performance Measures for Snow- and Ice-Control Activities

摘要

In 1996, the Washington State Department of Transportation implemented a system of performance measures and service levels for highway maintenance activities known as the Maintenance Accountability Process (MAP). Initially, the MAP did not include service levels for snow- and ice-control activities based on field measurement, as it does for the majority of other maintenance activities. To gain similar benefits for snow- and ice-control activities, a pilot project that included performance measures, service levels, and field measurement protocols was developed and implemented. Two performance measures were used: the amount of roadway traction provided at the time of a field measurement, and the time taken to regain bare pavement after the end of a snowfall event. More than 100 3-km (2-mi) segments of highway were randomly selected for field condition measurement throughout the winter season (November 1 to March 31). At the end of the season, point values were added together for service level determinations. The initial pilot project was assessed in spring 2000 to make revisions and to determine the long-term direction of the activity. The intended outcome of the pilot project is to identify a performance-based service level being delivered for snow and ice control. This information could then be used for more accurate budget planning and resource allocation in the future.