E-c014: Traffic Analysis Software Tools (ec014. pdf)
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TS/PP-Draft
TS/PP-Draft is an arterial-based time-space and platoon progression diagram tool. Using TS/PP-Draft the user can change control parameters such as phase sequences, splits, offsets, or cycle length, and observe an immediate change in a graphical time-space diagram. The program allows the user to select one of two types of time-space diagrams: 1) a time-space diagram with green bands showing the approximate location of the platoon, and 2) a platoon progression diagram showing the traffic flow and queue lengths. For a detailed analysis of platoon dispersion, the program requires the following data: speeds and distances between intersections, number of thru lanes, cycle length, phase sequences, splits, right-turns-on-red, volumes, and ideal saturation flow rates. The program calculates the “actual” saturation flow rates using the method prescribed in Chapter 9 of the Highway Capacity Manual. For a display of the time-space diagram only, the program does not require any of the traffic volumes or lanes data. TS/PP-Draft allows the user to observe platoon progression flows to enhance the fine tuning capability of the program. Based on the type of arrivals, the user may easily adjust the offsets, phase sequences, or other control parameters and view an immediate change on the monitor. TS/PP-Draft is fully compatible with the AAP, thus allowing the user to import and export AAP files. TS/PP-Draft can also import and export delimited ASCII data and provides context-sensitive, on-line help. PROGO PROGO (PROgression Graphics and Optimization) is an arterial-based time-space optimization program (30). The program has a limit of 20 intersections. PROGO uses a different approach to display progression than traditional time-space diagrams. It takes the traditional time-space diagram and transforms it to produce a “time-location diagram.” The user can edit the time-location diagram to iteratively produce the best solution or the program will self-optimize. Fine tuning a PROGO solution can take several forms, by changing any or a combination of the cycle length, phase sequences, offsets, or splits. Users can run PROGO directly from within the AAP using “GDF” files created by both PASSER II and TRANSYT-7F. PROGO is a DOS program. Data required to run PROGO include link lengths and speeds, cycle length, phase sequences, splits, and offsets. Traffic demands are not required. The program’s only measure of effectiveness is “progression opportunities” (PROS). PROS is defined as the number of progression opportunities between adjacent intersections on the artery. Transportation Research Circular E-C014: Traffic Analysis Software Tools 23 Download 284.29 Kb. Do'stlaringiz bilan baham: |
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