The shape of the STOP sign according to IRC 67-2001 is
- ACircular
- BOctagonalCorrect
- CSquare
- DRectangular
Solution
Concept
Shape specifications for STOP traffic signs
Formula
NONE
Step-by-step solution
1. IRC 67-2001 provides standard guidelines for road signs and markings in India. 2. Regulatory traffic signs use designated shapes and colors to ensure clear visibility. 3. The STOP sign is standardized as an octagonal shape with a red background. Answer: B
Explanation
According to Indian Road Congress standards IRC 67, regulatory stop signs are uniquely octagonal in shape with a red background and white border. This distinct eight-sided shape ensures that drivers can recognize the stop sign immediately from a distance. Therefore, option B is correct.
Why the other options are wrong
A) Circular signs are used for mandatory instructions such as speed limits rather than STOP signs. C) Square signs are used for informational guidance rather than STOP signs. D) Rectangular signs are typically used for directional or informational traffic signs.
Shortcut
STOP sign shape: IRC standard STOP sign is ALWAYS Octagonal (8 sides).
Common mistake
Assuming the STOP sign follows the standard circular shape of mandatory/regulatory traffic signs instead of being octagonal.
Correct answer: B) Octagonal