SINGAPORE - A man was seen dangerously cutting off a public bus while riding on an electric scooter in Mandai.

A video posted on Stomp on Thursday (Sept 22) shows the e-scooter user, who appears to be wearing a helmet and gloves, hugging the kerb before catching up to an SMRT bus service 171 along Mandai Road.

The scooter rider then cuts across the lane to enter the middle lane, before overtaking the bus and swinging back out to the kerb.

The incident, which took place around 8am on Thursday, was filmed from a car following closely behind at 70kmh.

The Government's Active Mobility Advisory Panel (AMAP) guidelines, which were proposed earlier this year and are set to become law, state that personal mobility devices (PMDs) - a category of motorised devices that includes e-scooters - should not be used on roads.

They are allowed on footpaths, cycling paths and shared paths.

These guidelines were reiterated by the police and Land Transport Authority (LTA) when The Straits Times sought more information on the incident.

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AMAP member Denis Koh, who runs the Big Wheel Scooters Singapore interest group, said that he was very angry to learn of the matter.

"In the first place, it's not allowed on the roads," he said.

Mr Koh also said that members of his interest group would be reminded not to glamorise speeding or advertise e-scooter modifications that enhance the speed of their device.

AMAP guidelines state that PMDs should not be capable of travelling faster than 25kmh, although illegal modifications pose a headache for the authorities.

The LTA maintains a list of non-compliant devices on its website.

Despite the current lack of laws that specifically govern e-scooters, the authorities said that errant scooter users can still be charged for offences such as committing a rash act.

On Sept 17, a 53-year-old housewife was reportedly hit by an e-scooter and remains unconscious in hospital. The 17-year-old rider has been arrested.