HANOI, Vietnam — As strips of tofu sizzle beside her in a vat of oil, Nguyen Thu Hong listens for police sirens.
Police raids on sidewalk vendors have escalated quickly in downtown Hanoi since March, she said, and officers fine her about $9, or two days’ earnings, for the crime of selling bun dau mam tom — vermicelli rice noodles with tofu and fermented shrimp paste — from a plastic table beside an empty storefront.
“Most Vietnamese live by what they do on the sidewalk, so you can’t just take that away,” she said. “More regulations would be fine, but what the cops are doing now feels too extreme.”
Southeast Asia is famous for its street food, delighting tourists and locals alike with tasty, inexpensive dishes such as spicy som tam (green papaya salad) in Bangkok or sizzling banh xeo crepes in Ho Chi Minh City. But major cities in three countries are strengthening campaigns to clear the sidewalks, driving thousands of food vendors into the shadows and threatening a culinary tradition.
Officials say the campaigns in Thailand, Vietnam and Indonesia are largely aimed at promoting public order and food safety.
In Bangkok, the military junta has been clearing vendors from spots where pedestrians have complained about littering, sidewalk congestion and vermin, officials said, and plans to move some into designated areas that would be more hygienic.
“Bangkok wasn’t so crowded and congested” when the 1992 law regulating street vendors came into effect, said Vallop Suwandee, chairman of advisers to Bangkok’s governor. “But now it is, so we have to reorganize and reorder public…