In hill-road cross-drainage and surface drainage practice, are pavements generally provided with a two-sided camber? Choose the statement that best reflects common practice.

Introduction / Context:Camber is the two-sided cross slope often used on level terrain to shed water to both sides. Hill roads, however, have distinct drainage needs because of steep hillside and valley sides, catch-water drains, and frequent super-elevation on curves.

Given Data / Assumptions:

• Typical two-lane hill road with an uphill (hillside) and a downhill (valley) edge.
• Surface water needs to be intercepted efficiently to protect the pavement and slopes.
• Superelevation on horizontal curves is designed independently of camber.

Concept / Approach:On hill roads, a single cross-fall toward the hillside or toward adequate drainage facilities is commonly adopted rather than a traditional two-sided camber. Camber is “seldom” provided because the terrain naturally dictates a one-way slope and the use of catch-water drains on the uphill side and side drains on the valley side.

Step-by-Step Solution:

Verification / Alternative check:Standard hill-road guidelines emphasize one-way cross slope and cut-off drains; camber is not a typical default on such sections.

Why Other Options Are Wrong:Options (a) and (b) incorrectly associate camber with specific curve types; super-elevation, not camber, governs on curves. (d) is incorrect because (c) reflects the accepted practice.

Common Pitfalls:Equating camber with any cross-fall; misapplying plain-terrain principles to mountainous terrain.

Final Answer:Hill roads are seldom provided a camber