BEIJING — The Ministry of Public Security said May 20 it was concerned about price hikes on safety helmets sold by some enterprises and e-commerce platforms for motorcycles and electric bikes.

The ministry said it has instructed public security organs nationwide to coordinate with market regulators to crack down on price gouging and other violations.

The move came after the ministry launched a campaign requiring motorcycle and electric bike riders to wear a safety helmet while motorists and passengers are compelled to wear seat belts.

Starting from June 1, riding motorcycles without a helmet and driving or riding in cars without wearing a seat belt will be punishable. Electric bike riders will also be asked to wear helmets.

Sharp increases in helmet prices were reported in some e-commerce platforms as the demand surged.

The ministry warned helmet makers and vendors who break the law will be prosecuted.