This manual describes a computer model which simulates traffic flow on a rural road. The model, and the associated computer program, is referred to by the name TRARR. The model allows overtaking prohibitions, auxiliary lanes, horizontal and vertical curves, and variable sight distance to be studied. Vehicles may vary in performance and drivers may vary in their behaviour when unimpeded, following other vehicles, overtaking or merging. The detailed coding of the computer program was done with three objectives in mind: the behaviour of vehicles should be able to be varied greatly by changing the data without changing the program, the program should be reasonably efficient, and the program should be modular so that it may be easily modified. TRARR is thus a suite of programs with several subroutines common to all versions. The model is intended for the estimation of travel time costs of possible road alignments. Such costs may be combined with estimates of accident costs, construction costs and fuel consumption obtained in other ways to aid decisions about rural road design. Within its appendices, the report gives samples of input data and corresponding output, and a complete listing of the source code of the program. The detailed logic of the program is described partly in the body of the report and partly in the comments included in the source code (a). (TRRL)

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  • Corporate Authors:


    Melbourne, Victoria  Australia 
  • Authors:
    • Robinson, G K
  • Publication Date: 1980-2

Media Info

  • Features: Figures; References;
  • Pagination: 25 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00315286
  • Record Type: Publication
  • Source Agency: ARRB
  • Report/Paper Numbers: Tec Manual ATM10 Monograph
  • Files: ITRD, TRIS, ATRI
  • Created Date: Oct 27 1980 12:00AM