Traffic Engineering MCQ with answer and solution

Concept

As per IRC road marking practice, kerbs are painted with alternate black and white stripes for good visibility.

Step-by-step solution

1. Kerb markings are meant to make the kerb clearly visible to drivers, both by day and at night. 2. Alternate black and white stripes give high contrast. 3. IRC recommends alternate black and white bands on kerbs. Answer is (D).

Explanation

Kerb markings help drivers see the edge of the road, islands and medians. Alternate black and white stripes give the best contrast. This is the standard practice in India.

Why the other options are wrong

A: White and yellow together give poor contrast and are not the standard for kerbs. B: Yellow alone is used for no-parking or no-overtaking lines, not general kerb marking. C: Black alone is not visible on dark roads.

Shortcut

Kerb = black and white stripes (zebra look).

Common mistake

Confusing kerb marking with yellow no-parking marking, or with the black-and-yellow stripes used on hazardous obstructions.