JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives:

• This unit of study aims to introduce you to basic principles of traffic, volume studies, methods of volume counts, speed & delay studies. Presentation of speed data, headway & gap acceptance will be discussed briefly.
• Provide grounding in techniques for analyzing transport problems and developing and implementing policies and measures for resolving such problems.
• This course focuses on traffic, its properties, measurement, simulation and control. It starts with 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.
• Attention is given to the management of different road user groups, including pedestrians of different abilities, buses, trams and cycles, leading to a critical examination of the arguments behind traffic segregation and integration. Methods for the assessment of traffic engineering schemes are presented.

Course Outcomes

At the end of the course, the student will be able to:

• Estimate basic characteristics of traffic stream
• Conduct traffic studies and analyze traffic data
• Design traffic signal systems
• Determine the capacity of highways
• Evaluate the transportation system & identify measures to improve situations

UNIT - I

Traffic Studies (Part- I) : Basic principles of Traffic, Volume, Speed and Density; Definitions and their interrelationships; Traffic Volume studies - Objectives, Methods of Volume counts, Presentation of Volume Data; Speed studies- Types of Speeds, Objectives, Methods of speed studies, Statistical Methods for speed data Analysis, Presentation of speed data. Delay Studies; Head ways and Gap Studies - Headway and Gap acceptance, Origin and Destination Studies.

UNIT - II

Traffic Studies (Part-II) : Parking Studies: parameters of parking, definitions, Parking inventory study, Parking survey by Patrolling method; Analysis of Parking Survey data; Accident studies- Causative factors of Road accidents, Accident data collection: Accident analysis and modeling;, Road Safety Auditing, Measures to increase Road safety.

UNIT - III

Capacity and LOS Analysis: Introduction to Traffic capacity, Analysis concepts, Level of Service, Basic definitions, Factors affecting Capacity and LOS, Capacity of Urban/Rural Highway, With or without access control, Basic freeway segments - Service flow rate of LOS, Lane width or Lateral clearance adjustment; Heavy vehicle adjustment; Driver population adjustment.

UNIT - IV

Signal Designing – Fixed Time signals, Determination of Optimum Cycle length and Signal setting for Fixed Time signals, Warrants for Signals, Time Plan Design for Pre-Timed Control- Lane group

analysis, Saturation flow rate, and Adjustment factors, Uniform and Incremental Delay, Vehicle Actuated Signals, Signal Coordination.

UNIT - V

Transportation System Management-Measures for Improving vehicular flow – one way Streets, Signal Improvement, Transit Stop Relocation, Parking Management, Reversible lanes- Reducing Peak Period Traffic - Strategies for working hours, Congestion Pricing, Differential Toll Policies.

REFERENCES:

• 1. Traffic Engineering and Transportation Planning – L.R. Kadiyali, Khanna Publishers
• 2. Principles of Highways Engineering and Traffic Analysis - Fred Mannering & Walter Kilareski, John Wiley & Sons Publication
• 3. Fundamentals of Transportation Engineering - C.S. Papacostas, Prentice Hall India.
• 4. IRC Codes
• 5. Traffic Engineering - Theory & Practice - Louis J. Pignataro, Prentice Hall Publication.
• 6. Traffic Engineering by Roger P. Roess, William R. Mc. Shane, Elena S.Prassas , Prentice Hall, 1977.
• 7. Transportation Engineering – An Introduction - C. JotinKhisty, Prentice Hall Publication
• 8. Fundamentals of Traffic Engineering – Mc Shane & Rogers.
• 9. Highway Capacity Manual -2000.