Traffic control Devices
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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.
Traffic control Devices
- 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) 18-11-2017 1
- 2. CONTAINS • Introduction • Requirements • Genaral Information • Types • Description • Reference 18-11-2017 2
- 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. 18-11-2017 3
- 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. 18-11-2017 4
- 5. General Color Coding Yellow – general warning Red – stop or prohibition Green – Direction guidance Orange – construction and maintenance warning 18-11-2017 5
- 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 18-11-2017
- 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 18-11-2017
- 8. Signs 1) Regulatory signs 18-11-2017 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
- 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. 18-11-2017 2) Warning signs
- 11. Signs 18-11-2017
- 12. Signs 3) Informatory Signs 18-11-2017 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 18-11-2017
- 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 18-11-2017 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. 18-11-2017
- 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 18-11-2017
- 17. Markings 1) Pavement markings 18-11-2017 These are generally be of white paint. Yellow colour marking are used to indicate parking restrictions.
- 18. Markings 2) Kerb markings 18-11-2017 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 18-11-2017 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 18-11-2017 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 18-11-2017