JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives:

• 1. This module focuses on traffic, its properties, measurement, simulation and control.
• 2. Traffic flow variables and their measurement. Traffic flow and queuing theory is introduced. Survey methods and data analysis techniques required by traffic engineers are presented.
• 3. Analysis of pedestrian delays and warrants.

Course Outcomes

At the end of the course, the students will be able to

• 1. Estimate basic characteristics of traffic stream.
• 2. Conduct traffic studies and analyze traffic data.
• 3. Understand traffic queue system.
• 4. Understand the pedestrian delays & gaps.
• 5. Understand simulation techniques.

UNIT - I

Traffic Flow Description: Traffic Stream Characteristics and Description Using Distributions: Measurement, Microscopic and Macroscopic Study of Traffic Stream Characteristics - Flow, Speed and Concentration; Use of Counting, Interval and Translated Distributions for Describing Vehicle Arrivals, Headways, Speeds, Gaps and Lags; Fitting of Distributions, Goodness of Fit Tests.

UNIT - II

Traffic Stream Models: Fundamental Equation of Traffic Flow, Speed-Flow-Concentration Relationships, Normalized Relationship, Fluid Flow Analogy Approach, Shock Wave Theory - Flow- Density diagram use in Shockwave analysis; Use of Time-space diagram for shockwave description; Bottleneck situations and shockwaves; traffic signal and shockwave theory; numerical Examples for application of shockwave theory; Car-Following Theory.

UNIT - III

Queuing Analysis: Fundamentals of Queuing Theory, Demand Service Characteristics, Deterministic Queuing Models, Stochastic Queuing Models, Multiple Service Channels, Analysis of M/M/1 system; Assumptions and Derivation of System State Equations; Application of M/M/1 analysis for parking Garages and Toll Plazas- numerical Examples; Analysis of D/D/1 system for delay characteristics; Traffic Signal analysis as D/D/1 system; Computation of delays and queue dissipation Time – Numerical Examples.

UNIT - IV

Pedestrian Delays And Gaps: Pedestrian Gap acceptance and delays; Concept of Blocks, Anti- blocks, Gaps and Non-Gaps; Underwood’s analysis for Pedestrian Delays; Warrants for Pedestrian Crossing Facilities – Minimum Vehicular Volume Warrant, Minimum Pedestrian Volume Warrant, Maximum Pedestrian Volume Warrant;

UNIT - V

Simulation of Traffic: Introduction, Advantages of Simulation techniques, Steps in Simulation, Scanning techniques, Example of Simulation.

REFERENCES BOOKS:

• 1. Traffic Flow Theory: A Monograph, TRB Special Report 165 R19 M.TECH HIGHWAY ENGG.
• 2. Fundamentals of Transportation Engineering – C.S. Papacostas, Prentice Hall India Publication
• 3. Principles of Highway Engineering and Traffic Analysis – F.L. Mannering & W.P. Kilareski, John Wiley Publishers.
• 4. Traffic Flow Fundamentals – A.D. May, Prentice Hall India Publication
• 5. Fundamentals of Traffic Engineering – McShane & Rogers,1977. R19 M.TECH HIGHWAY ENGG. M.TECH.- I YEAR- II SEMESTER HIGHWAY ENGINEERING