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OSCADY/3 USER GUIDE

Martin Crabtree, Sybil Harrison

Open publisher page 2 citations

Abstract

OSCADY/3 (Optimised Signal Capacity And DelaY) is a computer program for calculating capacities, queue lengths, and delays (both queueing and geometric) for isolated, traffic signal controlled, junctions. It can also be used to predict accident rates at urban cross roads from information about traffic flow and site data. The program is used as a tool by junction design engineers to help them to assess their designs. The OSCADY/3 manual is completely new and has been written with emphasis on user-friendliness and comprehensibility. The manual describes, in separate chapters, the theory and research incorporated in OSCADY, how an OSCADY model should be specified (including guidance on how to measure data) and the way data is entered. Also described is the output and how it should be interpreted. A number of examples have been included to aid in the understanding of individual junctions and the modelling problems they may pose.

About this research paper

What this paper is about

OSCADY/3 (Optimised Signal Capacity And DelaY) is a computer program for calculating capacities, queue lengths, and delays (both queueing and geometric) for isolated, traffic signal controlled, junctions. It can also be used to predict accident rates at urban cross roads from information about traffic flow and site data. The program is used as a tool by junction design engineers to help them to assess their designs. The OSCADY/3 manual is completely new and has been written with emphasis on user-friendliness and comprehensibility. The manual describes, in separate chapters, the theory and research incorporated in OSCADY, how an OSCADY model should be specified (including guidance on how to measure data) and the way data is entered. Also described is the output and how it should be interpreted. A number of examples have been included to aid in the understanding of individual junctions and the modelling problems they may pose.

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Available abstract

OSCADY/3 (Optimised Signal Capacity And DelaY) is a computer program for calculating capacities, queue lengths, and delays (both queueing and geometric) for isolated, traffic signal controlled, junctions. It can also be used to predict accident rates at urban cross roads from information about traffic flow and site data. The program is used as a tool by junction design engineers to help them to assess their designs. The OSCADY/3 manual is completely new and has been written with emphasis on user-friendliness and comprehensibility. The manual describes, in separate chapters, the theory and research incorporated in OSCADY, how an OSCADY model should be specified (including guidance on how to measure data) and the way data is entered. Also described is the output and how it should be interpreted. A number of examples have been included to aid in the understanding of individual junctions and the modelling problems they may pose.

Key concepts: Queueing theory, Computer science, Queue, Measure (data warehouse), SIGNAL (programming language), Emphasis (telecommunications), Real-time computing, Operations research

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