Traffic Impact Study 11102025 4927 7608 81845

Traffic Impact Study Proposed Mixed-Use Development – West Orange, NJ Page 3 An unsignalized (STOP sign controlled) driveway or side street along a through route is seldom critical from an overall capacity standpoint, however, it may be of great significance to the capacity of the minor cross-route, and it may influence the quality of traffic flow on both. When analyzing an unsignalized intersection, it is assumed that both the major street through and right turn movements are unimpeded and have the right-of-way over all side street traffic and left turns from the major street. All other turning movements in the intersection cross, merge with, or are otherwise impeded by major street movements. Traffic delays at unsignalized intersections are determined by sequentially processing these impeded movements. Table 2 describes the level of service ranges for unsignalized (stop controlled) intersections. Table 1 Level of Service Criteria for Signalized Intersections Table 2 Level of Service Criteria for Unsignalized Intersections Level of Service Average Control Delay (seconds per vehicle) Level of Service Average Control Delay (seconds per vehicle) A 0.0 to 10.0 a 0.0 to 10.0 B 10.1 to 20.0 b 10.1 to 15.0 C 20.1 to 35.0 c 15.1 to 25.0 D 35.1 to 55.0 d 25.1 to 35.0 E 55.1 to 80.0 e 35.1 to 50.0 F greater than 80.0 f greater than 50.0 Analyses within the Highway Capacity Manual assume a random arrival for all the movements, which may not be the case if an adjacent traffic signal is present that platoons vehicles, such as the signalized intersection of Northfield Avenue and St. Cloud Avenue as well as Northfield Avenue and Walker Road. All capacity analyses were performed utilizing Synchro 12 software. It should be noted that the existing percentage of trucks and peak hour factors were used in the existing analysis. Table 3 summarizes the existing levels of service (LOS) and delays. All capacity analysis calculation worksheets are contained in Appendix C. Table 3 Existing Levels of Service Intersection Direction/ Movement AM PSH PM PSH Northfield Avenue & Sheridan Avenue EB L A (4) A (3) T A (3) A (3) WB TR A (4) A (3) SB LR C (29) C (24) Overall A (5) A (4) A (#) - Signalized Intersection Level of Service (seconds of delay per vehicle) The following are discussions pertaining to each of the existing intersections analyzed.