This document provides information about traffic control devices in India. It discusses the requirements of traffic control devices, general color coding, and the main types of devices which include signs, signals, markings, and islands. For signs, it describes the three types - regulatory, warning, and informative - and provides examples. It also discusses signals, markings, and provides some key advantages and disadvantages of signals. The document serves as an assignment on traffic control devices for a civil engineering course.

1. GANDHINAGAR INSTITUTE OF
TECHONOLOGY
SUBJECT : ELEMENTS OF CIVIL
ENGINEERING(2110004)
Active Learning Assignment on the topic of
Traffic Control Devices
BE Mechanical Sem-1 H3
Prepared By: Pandya Yash (Enrollment Number)
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2. CONTAINS
• Introduction
• Requirements
• Genaral Information
• Types
• Description
• Reference
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3. Traffic Control Devices
• The various aids and devices used to control ,
regulate and guide traffic may be called Traffic
ControlDevices.
• These devices are usually placed adjacent, over or
along the highways, roads, traffic facilities and other
public areas that require traffic control.
• In India, the Motor vehicles Act,1988 provides the
basis for regulating traffic.
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4. Requirements of a Traffic Control Device
 Fulfill a need,
 Command attention,
 Convey a clear, simple meaning,
 Command respect of road users,
 Give adequate time for proper response.
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5. General Color Coding
 Yellow – general warning
 Red – stop or prohibition
 Green – Direction guidance
 Orange – construction and maintenance warning
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6. Types Of Devices
Traffic Control Devices
Signs Signals
Fixed time
Manually
Operated
Automatic
Special
Traffic
Marking Island Lights
Regulatoey
Warning
Informatory
Pavement
Kerb
Object
Reflector
Delineators
Divisional
Channelizing
Pedestrain
loading
Rotary
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7. Signs
• Various traffic signs have been recognised by the
government of India through motor vehicle act, 1939.
• As per IRC, there are three types of traffic signs:-
1)Regulatory signs
2)Warning signs
3)Informatory signs
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8. Signs
1) Regulatory signs
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These are meant to inform the road users of certain laws,
regulations and prohibitions, the violation of the signs is a
legal offence
They are classified as:-
 Stop and give way signs
 Prohibitory signs
 No parking or No stopping vehicles
 Speed limit and vehicle control signs
 Restriction end signs
 Compulsory direction control signs

9. Signs
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10. Signs
 Warning signs are used to warn the road users of
certain hazardous conditions that exists on the
roadway.
 These signs are in the shape of equilateral triangle.
 They are having white background, red border
and black symbols.
 The side of triangle is 45cm.
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2) Warning signs

11. Signs
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12. Signs
3) Informatory Signs
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These signs are used to guide the road users along routes,
inform them about destinations and distances and provide
information to make travel easier, safe and pleasant.
Various Informatory signs are:
a) Direction and place identification signs
b) Facility information signs
c) Parking signs
d) Flood gauge

13. Signs
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14. Signals
 These are provided at road intersections.
These are control devices which could alternatively
direct the traffic to stop proceed at intersections using
red and green light signals automatically.
The main requirement of traffic signals are to draw
attention.
 Types of traffic signals:-
 Fixed time signals
 Manually operated signals
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 Automatic signals
 Special traffic signal

15. Signals
Advantages
 Maintain orderly flow of traffic.
 Reduce certain types of
accidents.
 Improves safety and efficiency
of movement of vehicles.
 Pedestrians can cross the roads
safety.
 More economical than manual
control.
 Increase in speed along
the major road traffic.
Disadvantages
 The rear and end collision may
increase.
 Improper design and location of
signals may lead to violations the
control systems.
 Failure of the signal due to
electrical power failure or any
other defects may cause
confusion to the road users.
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16. Markings
 Bare roads will lead to total vehicular confusion. Markings
are painted on the road to direct, guide and regulate the
road user.
 Road markings include all lines patters, words and colours
applied on or attached to the road surface or kerb, for the
said purpose
 Various types of markings are:-
o Pavement markings
o Kerb markings
o Object markings
o Reflector markings
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17. Markings
1) Pavement markings
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These are generally be of white paint.
Yellow colour marking are used to indicate parking
restrictions.

18. Markings
2) Kerb markings
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Marking on the kerb indicate certain regulations
like parking regulations.
Marking on the kerb and edges of islands with
alternative black and white line increase the
visibility from a long distance

19. Markings
3) Object markings
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Physical obstruction on or near the roadway are hazardous
and hence should be properly marked.
Typical obstructions are signs and signals, traffic islands,
narrow bridges, culvert.

20. Markings
4) Reflector markings
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These are used as hazard markers and guide markers for safe
driving during night.
These markers should be visible from a long distance of about
150 m.

21. Reference
Highway Engineering By Dr. R. P. Rethaliya
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