Highway Capacity and Level of Service

Proceedings of the international symposium, Karlsruhe, 24-27 July 1991

Ulrich Brannolte

• Publisher: Routledge
• Year: 2021
• ISBN:
  9781351440653
• Edition: 1
• Topic: Technology & Engineering
• Subtopic: Civil Engineering
• Index: Technology & Engineering

Proceedings of the International Symposium on Highway Capacity, Karlsruhe, Germany, July 1991. Papers range widely from driving behavior and pedestrian to the numerical value of freeway capacity and transit capacity.

Capacity and level of service by simulation – A case study of TRAF-NETSIM

Shui-Ying Wong

Federal Highway Administration, Washington, D.C., USA

ABSTRACT: We explore the prospect of using TRAF-NETSIM, a microscopic simulation model, to estimate capacity and level of service through a case study. In the case study, we collected stopped delay, saturation flow, bus dwell time, double parking duration, vehicle and pedestrian volumes, etc. These data served as the bases to run and to calibrate the model, and to check the model results. Although TRAF-NETSIM does not provide capacity and level of service directly, we showed how to make use of its detail simulation capabilities and graphics to obtain capacity and level of service. We also showed how to calibrate the model to represent local traffic conditions. The simulated capacity, stopped delay and level of service were very close to the field results.

Since TRAF-NETSIM is a stochastic model, there is concern that its results may vary. We examined its variability by inputting different random number seeds with different simulation times. We find that the variation of capacity was insignificant while that of stopped delay was mixed. We also examined the required number of runs and length of simulation times to obtain 95% level of confidence.

TRAF-NETSIM has many advantages. Its animated and static graphics...

Table of contents

• Cover
• Half Title
• Title Page
• Copyright Page
• Preface
• Foreword
• Table of Contents
• Some issues regarding the numerical value of freeway capacity
• Implementation of the Australian roundabout analysis method in SIDRA
• Indonesian Highway Capacity Manual
• Traffic operation on 2-lane roads in Hungary and the Netherlands
• German roads with intermediate cross-sections: Operations, flow and capacities
• The new German guideline for capacity of unsignalized intersections
• Expected delay and stop calculation for discrete time adaptive traffic signal control
• Urban arterial level-of-service evaluation method in Taiwan
• Effects of progression quality and traffic flow non-stationarity in delays models at signalized intersections
• New method of level of service estimation for two-lane rural roads in Poland
• Peripheral productivity: The key to success for the HCM
• Traffic flow and level of service on high-class two-lane rural roads in Finland
• Estimating delay at coordinated signalized intersections
• Impacts of smart signals on intersection capacity and level of service
• Research needs on the operational effectiveness of passing lanes on two-lane highways
• Analysis procedures for freeway interchange areas
• The problem of performance evaluation at signalized intersections with various traffic control strategies
• Vehicle capacity at pedestrian crossings in the United Kingdom
• Capacity and level of service at two-way stop controlled intersections: Comparison of British and US methods
• Concept of cooperative transport management for the Greater Munich Area
• Capacity of transit lanes
• Traffic patterns in unstable traffic flow on freeways
• Critical gap acceptance at two-way stop controlled intersections
• Development of Korean Highway Capacity Manual
• Some reflections on transit capacity
• Congestion, flow and capacity
• The capacity of highway with mixture of bicycle traffic
• A simulation model for the evaluation of weaving capacity
• Simultaneous analysis of a signalized intersection
• Bottle-necks on freeways: Traffic operational aspects of roadworks
• Freeway capacity: Definition and measurement issues
• Modelling the driving behaviour influenced by information technologies
• Traffic flow and capacity at work sites on freeways
• Some aspects of speed-flow relations on German motorways
• Determination of delays in pretime-controlled approach lanes to intersections for any traffic conditions
• Influence of safety requirements on traffic flow
• Quality of service on the main road network in the Netherlands
• Pedestrians at signalized intersections
• Quality of service in the new Canadian signal capacity guide
• Comparative analysis of major/minor priority intersection capacity methods
• Polish calibration of saturation flows and level of service criteria for signalized intersections
• Level of service considerations at signalized interchanges
• Performance of motorways and trunk routes at high traffic volumes
• The use of micro simulation for the design of weaving sections
• Passing demand on lower volume two-lane highways
• Freeway capacity and flow relationships
• Potential methods to forecast the actual highway capacity
• Capacity and level of service by simulation – A case study of TRAF-NETSIM
• Representing the effects of transit stops at signalized intersections
• Author index