The Transport Department said today that people have been tampering with road markings, traffic lights and traffic facilities recently and warned that it is illegal.
Transport officials also expect traffic congestion in So Kon Po and Causeway Bay tomorrow night because there will be an event at the Hong Kong Stadium.
A total of 225 bus routes are still affected by the protests, with eight routes suspended and 217 diverted.
Twenty green minibus routes that use Harcourt Road, Nathan Road and Argyle Street are still diverted or suspended.