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Which of the following is/are the objectives of road sign? i. Promote road safety ii. Promote efficient movement of vehicles iii. Increase design speed iv. Calculate traffic volume v. Provide warning for safe movement
Both iii and v
Only i
i, ii, iii and v
Only i, ii and v
Only i, ii and v
Road signs are essential traffic control devices installed to regulate, warn, and guide road users. Their primary objectives are to ensure road safety, enhance traffic flow efficiency, and provide necessary information to drivers to avoid accidents.
IRC: 67-2012 (Code of Practice for Road Signs)
Road signs are essential traffic control devices installed to regulate, warn, and guide road users. Their primary objectives are to ensure road safety, enhance traffic flow efficiency, and provide necessary information to drivers to avoid accidents.
VdтАЛ=tLтАЛ тАФ representing design speed where L is distance and t is time
q=k├Чv тАФ traffic flow relationship where q is flow, k is density, and v is mean speed
Road signs function by communicating standardized symbolic or textual messages to drivers. They regulate flow through mandatory signs, warn of hazards through warning signs, and inform users via information signs, thereby reducing reaction time and preventing congestion or erratic maneuvers.
Road signs are categorized into Regulatory, Warning, and Informatory signs.
Design speed (VdтАЛ) is a geometric feature determined by horizontal and vertical alignment, not by the installation of traffic signs.
Traffic volume studies are used to design road capacity, whereas signs are used to manage existing volume.
Reduces potential conflict points on highways.
Standardization allows drivers to interpret messages rapidly regardless of location.
Over-signing can lead to driver information overload.
Poor maintenance can render signs illegible or misleading.
Traffic regulation in urban intersections.
Warning of sharp curves or steep gradients on rural roads.
Statement iii (Increase design speed) is incorrect because design speed is a function of road geometry and physical parameters, not traffic signs.
Statement iv (Calculate traffic volume) is incorrect because traffic volume is measured using sensors or manual counts, not controlled by signs.
D is correct тАФ Road signs primarily serve to regulate traffic, provide warnings, and improve overall flow, while not directly influencing design speed or volume calculations.
Always distinguish between 'geometric design elements' (which define design speed) and 'traffic control devices' (which manage traffic on the design).
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