Singapore: A cyclist was horn by a car in the middle lane for drifting out on the left lane of the road.
The driver was driving in the middle lane while a cyclist from the group drifted out of the left lane of the road. The driver horned the cyclist that drifted out.
The cyclist then proceed to point the the abundant of space on the middle and first lane of the road. Signaling that the driver could have overtaken him using the available spaces.
According to Singapore Traffic Rules, it is a rules to always ride as close as practicable to the left-hand edge of roads, and allow traffic to overtake you safely. Keep a straight course, do not weave through traffic and avoid sudden swerves. And always use a cycling lane if it is available.