THE city will launch a campaign from today till September 30 to crack down on long-complained issues about the city’s booming bike-sharing service.

Illegal parking by users and flooding downtown with too many bikes by the bike-sharing companies are key targets of the crackdown, the city’s transportation commission said. Large numbers of bikes are blocking walkways, officials said.

The authority said yesterday that local transportation authorities will tighten management to ensure the requirements it issued in August are carried out, particularly with regard to ensuring that the bike companies stop launching new bikes onto the streets.