Kolkata's 'rainbow roads' raise red flags: Authorities scrub paint to roughen surface, restrict bikers

The city of Kolkata has become known for its brightly painted road markings that form a series of rainbow coloured stripes across several busy intersections. The paint was originally applied as a visual cue to guide traffic and to add a decorative element to the urban environment. Over time, motorists and two‑wheelers reported that the smooth surface of the coloured strips turned slippery when wet, leading to a rise in minor accidents and near‑misses. Local authorities therefore began to review the safety implications of the scheme, especially as the monsoon season approaches.

To address the problem, the municipal corporation ordered crews to scrub the paint from the most hazardous sections and to apply a roughened coating that provides better grip for tyres. The work was carried out during off‑peak hours to minimise disruption to traffic flow. In addition, a temporary ban on motorcycles and scooters was imposed on the affected stretches until the surface treatment is complete. Officials said the measures are intended to reduce slip‑related injuries and to restore confidence among commuters who rely on two‑wheelers for daily travel.

The episode highlights a broader concern about road safety in Indian cities, where rapid urban development often outpaces the implementation of durable infrastructure. Residents of Kolkata have expressed mixed reactions, with some appreciating the visual appeal of the coloured lanes and others demanding swift corrective action. Traffic police have pledged to monitor the repaired sections closely and to issue fines for violations that endanger public safety. The city’s experience may serve as a reference point for other municipalities that are considering similar aesthetic projects but need to balance design with functional safety.