USING SMALL TRUCKS TO CIRCUMVENT LARGE TRUCK RESTRICTIONS - IMPACTS ON TRUCK EMISSIONS AND PERFORMANCE-MEASURES

Large truck restrictions have been proposed to improve urban air quali ty and reduce traffic congestion. Some firms have indicated that they would switch from large to small trucks to circumvent large truck rest rictions and maintain a higher level of service. Large truck restricti ons may be counterproductive if they induce responses that increase em issions or otherwise degrade performance. This paper analyzes the impa ct on truck emissions and performance measures of a switch from large to small trucks. This paper also describes the recent efforts in Los A ngeles to implement peak period large truck restrictions.