D48 MASTER THE DAY

Which type of road is recommended to have a design speed of 50 kmph in mountainous terrain?

• Expressway
• NH & SH
• ODR
• VR

Answer explanation

NH & SH roads in mountainous terrain typically have a design speed of 50 kmph.

Which factor does not affect the geometric design of a road?

• Topography
• Design speed
• Type of vegetation
• Traffic volume

Answer explanation

Type of vegetation is not a geometric design factor for roads.

Which terrain requires the least roadway width as per IRC?

• Plain terrain
• Rolling terrain
• Mountainous terrain
• Steep terrain

Answer explanation

Steep terrain requires reduced roadway width as per IRC guidelines.

What is the minimum gradient required for unlined side drains?

• 0.5%
• 1%
• 1 in 500
• 1 in 200

Answer explanation

Unlined side drains require a minimum longitudinal gradient of 1%.

Which road element is provided for the safe crossing of pedestrians?

• Bus Bay
• Refuge Island
• Cycle Track
• Kerb

Answer explanation

Refuge islands provide a safe place for pedestrians to stop while crossing.

What is the minimum desirable width of a median on a rural highway?

• 1.2 m
• 3 m
• 5 m
• 15.5 m

Answer explanation

On rural highways, the minimum desirable width of the median is 5 m.

Which road element is used to separate the road pavement from the shoulder?

• Kerb
• Camber
• Median
• Shoulder marking

Answer explanation

Kerbs are used to demarcate the pavement and the shoulder.

What does the bump indicator measure?

• Sight distance
• Pavement unevenness
• Kerb height
• Gradient

Answer explanation

Bump indicator is used to measure pavement unevenness.

Which survey translates the finalized road alignment onto the ground?

• Map Study
• Reconnaissance Survey
• Preliminary Survey
• Location Survey

Answer explanation

Location Survey is used to transfer the finalized alignment to the site.

Which of the following does NOT directly influence stopping sight distance (SSD)?

• Driver reaction time
• Vehicle speed
• Kerb height
• Road friction

Answer explanation

Kerb height has no influence on stopping sight distance.