摘要: Beginning in January, 1997, an evaluation process was undertaken by the Maine211Department of Transportation (MDOT) in an effort to determine if developing 211technologies in the winter maintenance field might be viable and cost... 展开 Beginning in January, 1997, an evaluation process was undertaken by the Maine211Department of Transportation (MDOT) in an effort to determine if developing 211technologies in the winter maintenance field might be viable and cost effective 211additions to MDOT's current fleet of snow fighting equipment. This process 211included the evaluation of: Case-Tyler Zero Velocity System, Swenson Precision 211Placement System, Compu-Spread Ground Speed Control System and the Dickey-John 211Ground Speed Control. Data collected in both field and controlled settings 211indicate a savings in material is possible when utilizing some form of material 211metering equipment. Testing performed for purposes of material placement using 211Zero Velocity and Precision Placement systems also shows promise in producing 211material savings. Realization of these savings will require a singificant 211committment to equipment calibration and maintenance. It will also require a high 211level of coordination and cooperation between all personnel involved. In addition 211to the equipment evaluation, this report briefly discusses the Department's 211experience with salt as a primary material for treating highways in winter 211related conditions. 收起