ANALYSIS OF DELAY AND LEVEL OF SERVICE AT SIGNALIZED INTERSECTIONS IN DELAWARE

The purpose of this study is twofold: (1) to validate the existing models for estimating traffic delay at signalized intersections using field data; and (2) to develop a method for evaluating the level of service at signalized intersections by a combination of delay, saturation ratio, and platoon ratio. The report is presented in five sections. Section 1 is an introduction. In section 2, the two existing models for the estimation of delay, i.e. Webster's model and the Highway Capacity Manual method, are discussed. In section 3, the validity of these models is examined using the field data collected at sites in Newark, Delaware. A new model based on the multi-criteria approach for ranking alternatives is proposed for the level of service estimation and its validity is examined in section 4. The final section, section 5, presents a discussion of the methds for evaluating the level of service of the signalized intersection.