00241398

Component

http://onlinepubs.trb.org...s/hrr/1970/314/314-011.pdf

THE MAJOR FEATURES ARE PRESENTED WITH AN EXAMPLE OF A COMPUTER LANGUAGE AND SET OF PROGRAMS THAT WERE DEVELOPED AT THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY. THE OBJECTIVES MOTIVATING THIS DEVELOPMENT, ONE SUBSTANTIVE AND ONE PROCEDURAL WERE: (1) THE SYSTEM SHOULD BE POLICY-SENSITIVE, THAT IS, ABLE TO PREDICT THE CONSEQUENCES OF A WIDE RANGE OF ALTERNATIVE POLICIES TOWARD MULTIMODAL TRANSPORTATION SYSTEMS IN A THEORETICALLY ACCEPTABLE MANNER AND (2) THE SYSTEM SHOULD SUPPORT AN ANALYSIS PROCESS IN WHICH THE ANALYST EXPLORES A WIDE RANGE OF ALTERNATIVES AND AMASSES LARGE QUANTITIES OF INFORMATION WHILE SEEKING TO DEVELOP HIS UNDERSTANDING OF THE POLICY ISSUES IN A PARTICULAR PROBLEM. THE DECISION-ORIENTED DATA ORGANIZER-TRANSPORTATION ANALYSIS SYSTEM (DODOTRANS), REFLECTS THIS PHILISOPHY. IT IS POLICY-SENSITIVE IN THAT IT ANALYZES MULTIMODAL TRANSPORTATION SYSTEMS; CAN TEST A WIDE RANGE OF OPTIONS; CAN PREDICT A WIDE RANGE OF IMPACTS; FINDS EQUILIBRIUM OF SUPPLY AND DEMAND IN THE NETWORK EXPLICITLY; AND CONTAINS SUPPLY, DEMAND, EQUILIBRIUM, RESOURCE REQUIREMENTS, DEMAND SHIFT, AND EVALUATION CAPABILITIES. THE EVOLUTIONARY NATURE OF DODOTRANS IS STRESSED. A MODEL IS DESCRIBED FOR DETERMINING A SUITABLE LEVEL OF HIGHWAY INVESTMENT IN A LARGE, PRIMARILY URBANIZED REGION AND THE ALLOCATION OF THIS INVESTMENT TO SUBAREAS WITHIN THE REGION BASED ON THE COMMON SET OF SOCIAL AND ECONOMIC CONSIDERATIONS. THE MODEL OFFERS THE FOLLOWING ADVANTAGES AS COMPARED TO EXISTING METHODS: (1) IT REQUIRES A MINIMAL AMOUNT OF TRAVEL INFORMATION, (2) THE OBJECTIVE FUNCTION MAY BE MODIFIED TO REFLECT THE VALUES OF THE REGION UNDER STUDY, (3) THE IMPORTANCE OF DIFFERENT OBJECTIVES ON THE FINAL PROPOSAL MAY BE TESTED, (4) THE OBJECTIVE FUNCTION PROVIDES A BASIS FOR MAKING TRADE-OFFS BETWEEN THE ALLOCATION OF RESOURCES TO HIGH-DENSITY AREAS WHERE COSTS AND BENEFITS ARE HIGH AND LOW-DENSITY AREAS WHERE COSTS AND BENEFITS ARE LOW, AND (5) A GENERAL LEVEL OF REQUIREMENTS, WHICH WILL SERVE AS A FRAMEWORK FOR DEVELOPMENT OF MORE SPECIFIC PROPOSALS, CAN BE ESTABLISHED EARLY IN THE PLANNING PROCESS. THE MODEL IS DESCRIBED IN DETAIL.

Paper sponsored by Committee on Transportation System Evaluation and presented at the 49th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

01410253

No. 322

pp 135-163

1970

Highway Research Record

Print

Figures (4) ; References (29)

Computer programs; Decision making; Highway transportation; Investments; Mathematical models; Multiple use; Transportation

Transportation systems

Planning and Forecasting; Transportation (General)

TRIS, TRB

Nov 9 1970 12:00AM

• A GENERAL-PURPOSE MODEL FOR MOTOR VEHICLE OPERATING COSTS
• A MODEL FOR HIGHWAY NEEDS EVALUATION
• A PROPOSED METHOD OF REGULATING VEHICLE WEIGHTS IN ONTARIO
• AN APPROACH TO THE ECONOMIC EVALUATION OF URBAN TRANSPORTATION INVESTMENTS
• AN INVESTMENT APPROACH TOWARD DEVELOPING PRIORITIES IN TRANSPORTATION PLANNING
• CONGESTION TOLL PRICING FOR PUBLIC TRANSPORT FACILITIES
• EVALUATION OF A BUS TRANSIT SYSTEM IN A SELECTED URBAN AREA
• PROBLEMS, MISCONCEPTIONS, AND ERRORS IN BENEFIT-COST ANALYSES OF TRANSIT SYSTEMS
• THE VALUE OF TIME FOR COMMUTING MOTORISTS AS A FUNCTION OF THEIR INCOME LEVEL AND AMOUNT OF TIME SAVED
• USER BENEFITS IN ECONOMIC ANALYSIS OF METROPOLITAN FREEWAY CONSTRUCTION
• VEHICLE CHARACTERISTICS OF FUEL AND TRAVEL TIME ON URBAN ARTERIALS AND FREEWAYS