The Bangkok Metropolitan Administration (BMA) plans to ban stalls on the hugely popular Khao San Road footpaths from Wednesday and limit trading from 6pm to midnight.

The BMA also hopes to set up zones for food, clothing, massage and miscellaneous items.

About 300 street vendors on Khao San Road, who will suffer financially from the move, want the plan scrapped.

Yada Pornpetrumpa, president of Khao San Road Street Vendor Association, said on Monday that a petition will ask Bangkok Deputy Governor Sakoltee Phattiyakul to indefinitely shelve the plan.

Speaking on condition of anonymity, a member of the association said she could not agree with the BMA plan because it would cut her income by half.

"We will not only submit a petition to Sakoltee but we will also try to seek a meeting with him," she said.

Once the ban is implemented, street vendors will only be allowed to operate their stalls on the road between 6pm and midnight.

Street vendors to be banned across Bangkok, except in Yaowarat and Khao San, by year-end

A vendor said the plan would hurt her livelihood because she normally operates her stall between 10 a.m. and 1 a.m.

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"I don't think people will feel like shopping between 6 p.m. and midnight. It's the hours for relaxing," she said.

If all street stalls moved off the pavement and onto the road, it would become too crowded for shoppers, she added.

Yada also wondered if the BMA has talked to all relevant authorities. "What if Chanasongkram traffic police take action against us once we move our stalls to the road?" she asked.

A street vendor said her group would discuss the BMA response before planning any further moves.

"The BMA should show what preparations it has made if it is going to change the way that the lively trade on Khao San Road is conducted," she said.

The move is part of the efforts by the Bangkok authorities to clean up the city's sidewalks. It has already banned illegal street vendors selling everything from clothes to food at Siam Square and Pratunam, where the sidewalk mayhem slowed down pedestrians and caused traffic jams.