TRIPCAL5 Documentation Manual, Revised Edition (1235-6)

This manual is designed to provide technical documentation for the trip generation program TRIPCAL5. It was originally published in February 1992 and is published here in revised form to include documentation on the default models; this documentation is presented as a technical appendix.|In an effort to update The Texas Department of Transportation's transportation planning process, the trip generation program, TRIPCAL5, was developed in 1990. TRIPCAL5 is a multi-functional, flexible program for estimating trip production and attractions for multiple trip purposes via user-specified models. Trip productions and attractions may be estimated for up to 10 trip purposes and 9,999 zones. The program includes such features as user-specified trip production and attraction models, input of user-developed disaggregate data at the zone level, and/or the disaggregation of the zonal data using default models within the program. The program's flexibility allows the trip generation process to be designed to maximize the use of local data and provides a quantum improvement in the trip generation process.|Included in this report are program options; a brief discussion of the function and purpose of each subroutine; cross reference of the subroutines and functions; description of each of the variables by labeled common statements; description of the sorts and sort keys; data set formats; how the data flow through the program; discussion of the results of the program tests which were done; and a summary.|The appendix provides technical documentation on the default models which provide flexibility to the user in the application of TRIPCAL5. The use of disaggregate cross-classification trip generation model is assisted by the provision of these default models in TRIPCAL5. These models will disaggregate households at the zone level and produce reasonable estimates of the percentages of households by household size, household income and vehicle availability. A default model is also included which estimates the total truck and taxi trip productions within the urban area.