THE URBAN-REGION TRANSIT ANALYSIS SYSTEM (UTRANS) VOLUME I: DOCUMENTATION

THE PURPOSE OF THIS REPORT IS TO PROVIDE DETAILED DOCUMENTATION OF THE URBAN-REGION TRANSIT ANALYSIS SYSTEM (UTRANS) AND TO MAKE AVAILABLE TO POTENTIAL USERS OF THIS TOOL A COMPREHENSIVE SET OF GUIDELINES AND INSTRUCTIONS ON THE OPERATION OF THE COMPUTER MODELS. THE STUDY IS DIVIDED INTO TWO VOLUMES AND IS AIMED AT TWO DIFFERENT AUDIENCES: THOSE WITH A PROGRAMMING BACKGROUND WHO MAY WISH TO ADAPT UTRANS TO A SPECIFIC APPLICATION OR TO DIFFERENT COMPUTER HARDWARE ENVIRONMENTS WILL FIND COMPLETE INFORMATION ON PROGRAM OPERATION IN VOLUME I. THOSE WISHING A DESCRIPTION OF THE COMPUTER SIMULATION REQUIRING NO BACKGROUND IN COMPUTER PROGRAMMING WILL FIND VOLUME II, THE USER'S MANUAL, USEFUL. SECTION II OF THIS VOLUME PRESENTS A BRIEF OVERVIEW OF THE OPERATION AND CAPABILITIES OF UTRANS. SECTION III PRESENTS A BRIEF DESCRIPTION OF THE COMPUTER HARDWARE ENVIRONMENT AT THE URBAN SYSTEMS RESEARCH CENTER. GENERAL CONCEPTS OF DATA STRUCTURE AND THE SPECIFIC FEATURES USED FOR UTRANS ARE DISCUSSED IN SECTION IV. THE DISK FILE STRUCTURE, PRESENTED IN SECTION IV, IS MORE FULLY DESCRIBED IN SECTION V. SECTION VI PRESENTS A SHORT SYNOPSIS OF THE SALIENT FEATURES OF EACH PROGRAM, AN OPERATIONAL DESCRIPTION AND A LISTING OF THE FORTRAN CODE, INCLUDING A FLOW CHART OF THE PROGRAM. /UMTA/