Why are Hong Kong license plates white and yellow?

Hong Kong's one white and one yellow license plate followed the British regulations in its early years. Vehicles walking in Hong Kong need to hang license plates at the front and rear. The card surface is made of reflective material, with black characters on a white background on the front and black characters on a yellow background on the back. The specifications refer to British BS AU 1972 standard.

Therefore, the small print "BS AU 145a" is required on each license plate. However, at that time, British law stipulated that only white lights or reflectors could be displayed at the rear of the car when reversing, and the reflective license plate was only a kind of reflector, so officials had to settle for the second best and choose yellow as the rear license plate.

Civilian vehicles:

The earliest registration number without letters was issued from 1 to 9999, followed by the prefix "hk" (hk1-hk9999) and then the prefix "xx" (xx6 5438+0-xx9 9999). The superintendent who issued the license plate found that the prefix "HK" had been used up, so he put two crosses ("XX") and the prefix "XX" appeared.

Originally said to use two letters casually, but the person in charge of issuing license plates thought it was the prefix "XX". After the prefix "XX" was used up, the authorities decided to issue license plates alphabetically from the prefix "AA".

Because the four-digit (4000-4999) registration number with four prefixes is reserved for buses and taxis when it is issued; The four-digit (5000-5999) registration number prefixed with 5 is reserved for trucks, so some license plates are pulled up.

Later, the system of reserving license plates for buses, taxis and trucks was abolished, and license plates were issued together with other vehicles. In the early years, the four-digit (8000-8999) registration number with the prefix of 8 was reserved for government vehicles, and later the prefix "AM" was changed.