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
- AOnly i
- Bi, ii, iii and v
- CBoth iii and v
- DOnly i, ii and vCorrect
Solution
Concept
Road signs guide, warn and regulate road users for safe and smooth traffic.
Step-by-step solution
1. Road signs give information, warnings and rules to road users. 2. So they promote road safety (i is correct). 3. They help vehicles move smoothly and efficiently (ii is correct). 4. Warning signs give advance warning for safe movement (v is correct). 5. Design speed is fixed at the design stage, not by signs (iii is wrong). 6. Traffic volume is found by traffic counts, not by signs (iv is wrong). 7. So the correct statements are i, ii and v. Answer is (D).
Explanation
Road signs are used to make roads safe and to keep traffic moving well. They also warn drivers about hazards ahead. They do not change design speed or measure traffic volume.
Shortcut
Signs inform, warn and regulate. They do not design the road or count vehicles.
Common mistake
Thinking that speed limit signs increase design speed. Design speed is decided during geometric design.
Correct answer: D) Only i, ii and v