Beginning in 1920, the Hong Kong Police Force began to formalise and standardise. At that time, only shorts were allotted for the summer police uniform, so every summer, the Hong Kong Police Force could only use long socks in conjunction with shorts. The colour of the stockings became one of the criteria for distinguishing the ranks of the police, with black stockings being worn by middle and lower ranked police officers and yellow stockings being worn by middle and senior ranked police officers. 1960's was a time when Hong Kong's economy was booming and the crime rate was on the rise, so in order to be able to respond to the police quickly and to carry out their duties in areas with poor road conditions, the British Government of Hong Kong procured a large number of Land Rover Land Cruisers to be used in the police force. As there was no Chinese translation at that time, the public simply called them Jeeps. Because of its durability and excellent off-road performance, it became the mainstream of Hong Kong police vehicles, and was very common on the streets in the 70s and 80s, but with the accelerated urbanisation, the design and performance of Jeeps no longer met the needs of the 90s. Jeeps slowly withdrew from Hong Kong's police force after 2000, and most of them were replaced by the new mid-sized vehicles, which can only be found in the old photos nowadays.
