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Transportation Engineering

 Akhtar Abbas Assistant Professor

The University of Lahorewww.uol.edu.pk/ce

Department of Civil Engineering,(10-05-2012)

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The devices used to control and regulatethe traffic are known as traffic control

devices. The most common of these area. Signs

b. Signals

c. Marking

d. Island

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a. Traffic Signs. Traffic sign is a devicemounted on a fixed or portable support

to convey a definite message by meansof words or symbols. The traffic signshave been divided into the following

three categories. They area) Regulatory signs

b) Warning signs c) Informatory signs

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Traffic Control Devices

a) Regulatory signs. These are mandatorysigns. The noncompliance of these signs

is offence and the defaulter can beprosecuted in a court of law. These signsare used to inform road users of certain

laws and regulations to provide safetyand free flow of traffic. These include allsigns which give notice of special

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Traffic Control Devices

obligations or restrictions which the roadusers must comply.

b) Warning or cautionary signs. Thesesigns are used to warn road users of theexistence of certain hazardous conditions

either on or adjacent to the road way towarn the motorists to caution to take thedesired action.

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Traffic Control Devices

c) Informatory signs. These signs areused to guide road users along routes,

inform them about destination anddistance to identify points of geographicaland historical interest and provide

information that will make road traveleasier, safe and pleasant.

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Traffic Control Devices

For remaining part of topic

a. Signals

b. Marking

c. Island

literature will be provided

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