Traffic Engineering(Departmental Elective - II) — Summer 2024

Enlist various aspects of human vision which affect the road user.

Justify the statement “Psychological factors of road users which affect in traffic operation.

Explain the operating characteristics of vehicles.

Enlist static and dynamic characteristics of road vehicles to be considered in traffic engineering.

Avehicle travelling at 40 kmph was stopped within 1.8 seconds after the application of the brakes. Determine the average skid resistance.

Outline the home-interview method of conducting O & Dstudies. Mention the advantages and limitations of this method.

Write a short notes on “3-E’s” for road safety.

Define:- 1) Hourly volumes 2) Average annual daily traffic (AADT) 3) Average daily traffic (ADT)

State the purposes of origin & destination studies.

Indicate how the traffic volume data are presented and the results interpreted for use in traffic engineering design.

Describe the purpose of spot speed study.

Compare collision diagram and condition diagram with neat sketch.

The table below summarises the field data collected through a traffic study for the spot speed. Speed class (kph) No. of vehicles observed 10 – 14.9 15 – 19.9 20 – 24.9 21 25 – 29.9 31 30 – 34.9 54 35 – 39.9 43 40 – 44.9 21 45 – 49.9 50 – 54.9 55 – 59.9 Making use of this data, calculate the following:

Modal speed (ii) Median speed1 (iii) Time mean speed (iv) Speed to be used in geometric design

Enlist the factors on which PCU values depend? Discuss briefly.

Write short notes on “Road marking materials”.

Draw the important types of warning signs and mention the function of each.

List the various geometric elements to be considered in highway design.

Describe the various factors to be considered during the design of traffic signal timings

Explain warrants for installation of traffic control signal.

Write the advantages and limitations of a traffic rotary, In particular reference to traffic conditions in India.

Explain the objects of highway lighting? Explain silhouette & reverse silhouette.

Explain the various factors to be considered in the design of road lighting.

Draw the different types of interchanges and mention their advantages.

Draw sketches of lighting layouts for a) horizontal curves of highway and

intersections.

Draw a neat sketch of a a) partial cloverleaf and b) fully cloverleaf and show the movement of traffic & describe its limitations.