TEAPAC Suite, PRENETSIM details

PRENETSIM
Preprocessor for TRAF-NETSIM and CORSIM Network Simulation/Animation

PRENETSIM is the preprocessor function in TEAPAC Complete to be used with the TRAF-NETSIM/CORSIM simulation model. NETSIM/CORSIM requires a rigid input stream of specially numbered card types and coded input fields. On the other hand, TEAPAC accepts data in a form directed by traffic engineering terms which are easy to understand, and builds the fixed format NETSIM/CORSIM input, thus eliminating user error in coding card types and batch input. Sub-system analysis is also very easy with PRENETSIM.

This interactive analysis tool will automatically generate the network structure required by NETSIM for the signal system being analyzed, thus the user does not have to generate individual links or specify all of the fictitious nodes needed throughout the network. Further, the phasing and timings for each signal are specified in straightforward traffic engineering terms, and can be changed easily when testing alternatives. TEAPAC has the capability of interactively plotting a time-space diagram for any portion of the system, as well as easy-to-read signal timing charts with phasing diagrams. Because of the ease of input, an entire day's variation in traffic conditions can be analyzed quickly and accurately. This, in combination with the 2010 or 2000 HCM capacity analysis output, TEAPAC provides all the information needed to fully analyze the timing operation in a network. Furthermore, PRENETSIM uses the saturation flows and optimum signal phasings and timings computed by TEAPAC for each signal. TEAPAC can also export to PASSER-II and TRANSYT based on the same data base used for NETSIM to take advantage of the optimization both programs offer. Since the results of all of these programs are required inputs of NETSIM, the use of PRENETSIM in conjunction with TEAPAC makes a smooth, error-free system for signal timing optimization. TEAPAC also exports to TS/PP-DRAFT and SYNCHRO/SIMTRAFFIC to exploit these programs capabilities.

NETSIM performs a microscopic, stochastic simulation of traffic performance in a network. The procedure provides a concise and well-founded operational analysis for a signal system, rather than using other less accurate models. The program can be used to simulate existing signal system operations as well as optimized operations. Furthermore, the animation option of NETSIM illustrates the traffic performance visually in addition to the numeric results. As such, the use of NETSIM is highly recommended, but its difficulty in use can be frustrating. PRENETSIM is the answer to this dilemma, allowing quick and effective use of NETSIM.

this page last updated February 04, 2019