COM 0574.005 1996-1998 - Laserfiche WebLink

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a 4 The trip generation step forecasts the volume of vehicle trips which would be generated by the proposed church and homes on Sunday mornings. However, the homes are not expected to be a significant traffic generator due to their small number. Five homes are expected to generate less than two trips an hour on a Sunday morning based on trip generation rates from the Institute of Transportation Engineers' Trig Generation (Fourth Edition, 1987). Therefore, the homes' trips were assumed to be part of the church's trip generation. The church is expected to be the major traffic generator on Sunday mornings. Based on the pastor's estimates of current attendance, they can expect 50 to 60 vehicles. Although all these vehicles would not arrive in the hour before the service began and leave in the hour following the end of service, it was assumed that 60 vehicles would arrive in the hour from 9:00 a.m. to 10:00 a.m. and leave between 11:00 a.m. and 12:00 noon. Since many'vehicles would arrive just before the service and leave right after, a peak hour factor of 0.65 was used for these traffic movements. This implies that about 40 percent of the vehicles would enter and leave in a 15 minute period. Peak hour factors on roadways normally range from 0.85 to 1.0, implying a more uniform distribution of vehicle flow. The trip distribution step divides the generated trips by the direction of travel from the project site. The pastor estimates that one fifth (12 vehicles) of the current attendees live north (mauka) of the project site and the remaining four-fifths (48 vehicles) live south (makai). The trip assignment step assigns the distributed trips as turning movements to the study intersection. The results of the trip distribution and assignment procedures