Showing papers on "Traffic wave published in 1970"
TL;DR: A simple but realistic model of traffic flow on highways treats steady-state flow on uniform roads in the LIMIT of DENSITIES so low that no QC needs to be considered, and corrections to the desired lane behaviour are made.
13 citations
TL;DR: The model of traffic flow on highways in the form of an expansion in density for steady-state flow is analyzed and examples of decreased speed due toQueuing are worked out.
9 citations
Journal Article•
TL;DR: A FORMULATION of a MODEL of MULTILANE TRAFFIC USing MARKOV RENEWal Theory is presented, which will accept any set of VEHICLE BEHAVIORAL RULES and is VALID for any number of LANes.
Abstract: A FORMULATION OF A MODEL OF MULTILANE TRAFFIC USING MARKOV RENEWAL THEORY IS PRESENTED. THE MODEL CONSIDERS THE MOVEMENTS OF INDIVIDUAL VEHICLES WITHIN A GIVEN TRAFFIC ENVIRONMENT THAT IS DESCRIBED BY A BIVARIATE PROBABILITY DISTRIBUTION OF PLATOON LENGTHS AND SPEEDS. OUTPUTS OF THE MODEL WILL NOT INCLUDE AVERAGE VEHICLE SPEED, VEHICLE DELAY, AND LANE-CHANGING INTENSITIES AND PATTERNS. THE BASIC FRAMEWORK PRESENTED WILL ACCEPT ANY SETS OF VEHICLE BEHAVIORAL RULES AND IS VALID FOR ANY NUMBER OF LANES. /AUTHOR/
2 citations
Journal Article•
TL;DR: In this paper, the authors present an analysis of the effect of the presence of an off-ramp on both the up-stream and the down-stream sides of the exit point.
Abstract: ANALYSIS OF TRAFFIC DYNAMICS IS MADE BY FORMULATING A SIMPLE TRAFFIC MODEL, WHEREIN THE PRESENCE OF AN OFF-RAMP IS STUDIED ON BOTH THE UPSTREAM AND THE DOWNSTREAM SIDES OF THE EXIT POINT. THESE STUDIES PROVIDE A FIRST LOOK AT THE FREEWAY TRAFFIC DYNAMICS IN THE VICINITY OF AN OFF-RAMP. THE ANALYTICAL FORMULATION IS BASED SOLELY ON THE PRIMARY GOVERNING MECHANISMS THAT ARE THOUGHT TO CONTRIBUTE SIGNIFICANTLY TO THE TRAFFIC BEHAVIOR IN THE VICINITY OF AN OFF-RAMP. THE PRESENT ANALYSIS HAS INCORPORATED A SIMPLE WEAVING EFFECT ON THE UPSTREAM SIDE AND A SIMPLE RIGHT-LANE BACK MERGE ON THE DOWNSTREAM SIDE OF A UNIDIRECTIONAL 2-LANE FREEWAY. THE ANALYSIS TECHNIQUE PRESENTED IN THIS PAPER CAN BE EASILY MODIFIED FOR APPLICATION TO OTHER MULTILANE FREEWAYS. /AUTHOR/
2 citations
17 Nov 1970
TL;DR: This paper describes a modeling technique which promises to be useful for traffic simulation and, thereby, aiding development of more advanced on-line signal control systems.
Abstract: Widespread interest in better traffic control techniques has resulted in the past few years because of the rapidly increasing numbers of vehicles in American cities. This paper describes a modeling technique which promises to be useful for traffic simulation and, thereby, aiding development of more advanced on-line signal control systems. For this method, simulation is accomplished by stepping individual vehicles through a traffic network system in accordance with driver responses to changing traffic and environmental conditions. During each time increment, a driver's response such as speed up, slow down, etc., is computed from various input conditions normally available to a driver. These inputs might include "is vehicle ahead slowing down," "is vehicle ahead stopped," etc. The vehicle's new positions, velocities, etc., are then computed and the next vehicle considered. Thus, the driver's responses to various input conditions are preprogrammed for the various driver types and intersection conditions. Vehicle arrival rates, driver characteristics, and vehicle flow paths may be functions of various statistical distributions. However, by also allowing preprogrammed driver actions, a desirable mixture between statistical and heuristic operations is obtained. Since the simulation can be used to predict traffic conditions, on-line simulation can then possibly be used as criteria for the selections of traffic signal control patterns or other control techniques.
1 citations