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Applicant CliY ðF Sf}» MltM5 Attachment D Quality of Service Study Method The applicant is to use the followin~instructions to conduct quality of service tests of signals proposed to be included in t e project. The attached "Quality of Service" Summary is to be completed and submitted with the application. Introduction Establishing the demand for traffic signal retiming projects is particularly difficult unless extensive data collection and analysis is performed beforehand. Since such effort is an integral part of the project being proposed, it is beyond the scope of preliminary needs assessments associated with the grant application. Consequently, the TLS program will require a simple study of travel time performance foreach project proposal which should be in the range of capabilities of applying local governments and provides a reasonable summary of the operational situation, This study is just a part of the review process, and will be used as an inexact guideline to assist in project selection and prioritization. General Description The travel time study methods defined here are not intended to be conclusive or statistically comprehensive, but rather to be implementable by any local government using only a vehicle and a stopwatch. The study will be a general summary of delay on each street of the project. Data should only be collected on Tuesdays, Wednesdays and Thursdays. The study will cover only the peak period, as defined by the applicant. Applicants are encouraged to use the most heavily travelled time period of a typical day to establish the typical worst case. Travel times on all streets will be done during this time period, according to the following methodology, Study Methodoloqy An intersection is defined as a junction of streets controlled by a traffic signal which is part of the project being proposed. Travel time runs will be performed in all legal directions on each street in the project. A run is defined as a trip from the first netwC)rk or arterial signal to the last network or arterial signal in one direction. For grid networks, two runs in each direction will be done for each network street that passes through two or more network signals. For arterial systems, three runs in each direction will be done, The time of crossing the stop line at the first signal will be recorded (or the stop-watch will be started) and the time of clearing the last intersection will be recorded (or the stop-watch will be stopped). The driver of the study vehicle should attempt to approach the first signal in a grid system once at the beginning and once during the middle of the green phase and, for an arterial, at the beginning, one-third point, and two-thirds point of the green phase. The driver should then attempt to drive the length of the street at the posted speed limit. Delay will be caused when other vehicles or traffic control devices impede the progress of the study vehicle, and the driver should not take extraordinary measures to avoid delay. Generally, the driver should stay in the most typically used through lane (such as the center or median lane).