TRAFFIC ENGINEERING

PREPARED BY:-MAKWANA AJAY136250306028

Street Furniture

Traffic Aids-Roadway DelineatorsHazard MarkersObject MarkersSpeed BreakersRumble StripsGuard RailsSafety BarriersBarricades and ChannelisersLitter Bins

Roadway Delineators-

Roadway delineators are intended to provide visual aids to drivers concerning the alignment of the road, especially at night. They are effective in locations where the horizontal and vertical geometry change and during severe weather conditions such as rain, fog or snow. Generally, delineators are reflectorized for better visibility during night.

Roadway Delineators-

Hazard Markers-

Hazard markers are intended to define obstructions like guard-rails and abutments adjacent to the carriageway.

Object Markers-object markers are used to indicate hazards

and obstructions within the vehicle path for example channelizing islands close to the intersections.

Typical applications are in the following location:I. Traffic islands at approaches to intersections.II. Around periphery of rotary islands.III. On far side of T-junctions and street dead-

ends.

Speed Breaker-

Speed breakers, also known as speed control humps, are commonly used on private access roads and near schools and universities in urban situations. They are to be disfavoured on through roads since they are dangerous to the vehicles.

Speed Breaker

Rumble strips-

Speed breakers are sometimes hazardous, in spite of the precautions taken in their safe design and construction. Some authorities do not favour them, especially on main roads. As a substitute, rumble strips, which are corrugated surfaces producing noise and a physical sensation on the steering, are provided. The driver gets alerted due to these sensations.

Guard Rails-

Guard rails are needed for guiding pedestrians to subways, footbridges and surface crossings and for preventing them from spilling in to the carriageway.

guard rails, should be set back 500 mm from the kerb to give enough clearance to passing vehicles.

Safety Barriers-

Safety barriers for motor-traffic are intended to prevent vehicles accidentally leaving the highway. Typical locations are approaches to bridges and high embankments. They are designed to with stand the impact of a vehicle and deflect the same inwards.

Barricades and Channelisers-Barricades and Channelisers are required

by controlling and diverting traffic on construction zones and temporary diversions.

Litter Bins-

Litter Bins are needed for collecting the waste thrown away by the road users. A design showing a pole-mounted litter bin is given.