Chief Executive Leung Chun-ying will not seek a second term, citing "family reasons”.
Police began a city-wide operation against jaywalking and other traffic offences on Friday.
These include disobeying light signals, crossing within 15 metres of a pedestrian crossing without using it and climbing over kerbside fences to carriageways.
Officers will issue summons against offenders during the operation.
China's highest court has ruled in favour of former basketball star Michael Jordan in a long-running trademark case relating to a local sportswear firm using the Chinese version of his name, overturning earlier rulings against the athlete.