Travel Demand Model - OKI

OKI/MVRPC Travel Demand Model – Version 6.05. Transit Network SkimmingThe procedures for building transit paths and calculating walk, in-vehicle, transfer and wait timesfor all transit modes were significantly overhauled as part of the Version 6.0 model developmenteffort. The new path building procedures are consistent with the nested structure adopted forthe consolidated mode choice model (see Figure 5-1). In addition, the procedure for estimatingzonal fares was updated to reflect the zone system of the consolidated region.Figure 5-1 Consolidated Model Mode Choice StructureChoiceAutoTransitDrive Alone Shared Ride Local Express Urban CommuterBus Bus Rail Rail2-Person 3+ Person Walk Park Kiss Walk Park Kiss Walk Park Kiss Walk Park KissAuto Auto Ride Ride Ride Ride Ride Ride RideRideHOV NonHOVHOV NonHOV5.1 Transit Path BuildingThe path building routine constructs eight sets of transit paths, two per transit mode, and foreach transit mode one per access mode, resulting in the following sets: local bus (walk access,drive access), express bus (walk access, drive access), light rail (walk access, drive access), andcommuter rail (walk access, drive access). Light and commuter rail are not valid transit modes inthe base year (1995), but they are included for testing alternative transit scenarios. In the eventthat these modes were available, it is expected that the local bus system will feed trips into therail system. Thus transit paths for which express bus, light rail or commuter rail is the maintransit mode are allowed to transfer to/from the local bus system. The parameters used toweight wait, walk, run and transfer times are listed in Table 5-1. Please see Appendix D for acopy of the path building Tranplan control files.Zones and Networks / 5 - Transit Network Skimming19