BTT Speed Limits and Zones 3

Question 1

What happens to the severity of pedestrian injuries as vehicle speed increases from 30 km/h to 50 km/h?

Accepted Answer

The risk of fatal injury increases dramatically — from about 10% to about 80%

Answer

At 30 km/h, about 10% of pedestrian collisions are fatal. At 50 km/h, this rises to about 80%. Even small speed reductions save lives.

Question 2

Your vehicle's speedometer reads 60 km/h. Is your actual speed likely to be exactly 60 km/h?

Accepted Answer

No — speedometers typically read slightly higher than actual speed

Answer

Most speedometers are calibrated to read slightly higher than the actual speed. This is a safety margin built in by manufacturers.

Question 3

What is the purpose of road humps in residential areas?

Accepted Answer

To physically force drivers to reduce speed for safety

Answer

Road humps are traffic calming devices designed to physically force drivers to slow down in areas with high pedestrian activity.

Question 4

On a road with a 50 km/h limit, can you be penalised for driving at 50 km/h if conditions are dangerous?

Accepted Answer

Yes — you must drive at a speed appropriate for conditions, even if below the limit

Answer

Driving at the speed limit in dangerous conditions (fog, rain, crowds) can be considered dangerous driving. You must adjust speed to conditions.

Question 5

What does the demerit point system do in relation to speeding offences?

Accepted Answer

It accumulates points per offence — too many leads to licence suspension

Answer

Singapore's demerit point system adds points for each offence. Accumulating 24 or more points within 24 months leads to licence suspension.

Singapore BTT Practice Test