Direct CORSIM Optimization and Post-Processing
TRANSYT-7F offers CORSIM post-processing, such that the engineer can summarize results from one or more CORSIM runs (with varying random number seeds). Following a CORSIM post-processing run,TRANSYT-7F produces a summary text report that contains NETSIM link results, NETSIM node results, and CORSIM network-wide results. TRANSYT-7F can also provide a one-page formatted report for NETSIM intersections. The summary text report and formatted report both provide intersection-wide control delay and level of service. The formatted report also provides approach-specific control delay and level of service. The Map View can also be used to graphically display NETSIM control delay and level of service. The interactive time-space diagram can be used to observe and design bandwidth in NETSIM.
TRANSYT-7F also offers “direct” CORSIM optimization (also known as “microscopic” optimization) of cycle length, splits, and offsets, using the genetic algorithm. With direct CORSIM optimization, TRANSYT-7F applies the genetic algorithm to supply timing plan candidates, and CORSIM evaluates them through its own simulation. The end result is a new copy of the original CORSIM input (*.TRF) file containing the optimized timing plan, plus the availability of TRAFVU animation for the optimized timing plan. TRANSYT-7F will minimize NETSIM control delay by default, but the user can choose among nine different CORSIM MOEs to be used as the optimization objective function.