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The first bike-only lane in Ho Chi Minh City opened along the sidewalks of Mai Chi Tho Boulevard on Dec. 31.
At some sections, the road surface has been coated with red thermochromic paint. The thick layer of paint becomes slippery when it rains, making it challenging for motorbike riders when turning or braking suddenly.
The paint layer has a flatter and smoother surface than asphalt, causing tyres to lose sufficient friction.
Tran Thao, a motorcyclist, said: "Since this red line appeared, I really don't dare to make a quick turn. I turn very slowly. Sometimes on rainy days, it tends to be slippery. When I make a turn, I have to slow down. In fact, I have seen many people slip."
Minh Quang, another motorcyclist, also said the line looks glossy and feels slippery. "If I go slowly, it's still okay, it's fine. But if I happen to be going at high speed or happen to brake suddenly, or accelerate quickly, I'll slip and fall very easily."
The bike lane is painted a striking red and runs along both sides of the street. The project aims to create a safer space for cyclists.
In several other countries, bike-only lanes are typically painted green, with the paint mixed with additives such as silica or glass beads to create a surface that provides better traction and reduces slipperiness.
