Hong Kong Government Cantonese Romanisation

The Hong Kong Government uses an unpublished system of romanisation of Cantonese for public purposes which is based on the 1888 standard described by Roy T Cowles in 1914 as Standard Romanisation. The primary need for romanisation of Cantonese by the Hong Kong Government is in the assigning of names to new streets and places. It has not formally or publicly disclosed its method for determining the appropriate romanisation in any given instance.

Method

Currently, government departments, particularly the Survey and Mapping Office of the Lands Department, consult the Chinese Language Department of the Civil Service Bureau before gazetting names and the latter vet proposed names using the Three Way Chinese Commercial/Telegraphic Code Book, originally published by the Royal Hong Kong Police Force Special Branch for internal government use in 1971. The code book system is devoid of any tone indications and, being grossly simplified, is susceptible to confusion.
Although the code book has only been available for several decades, the Romanisation approach for place names in Hong Kong has been broadly consistent since before 1888. This can be seen in maps of the period and in the government's publication A Gazetteer of Place Names in Hong Kong, Kowloon and the New Territories of 1960.

Typical features

For place names, the type of the place in English is often used instead of a romanisation and "Lo" ). Nevertheless, exceptions are not uncommon. "Wan" for "Bay" and "Tsuen" for "Estate" are also common. There are also many instances of surviving pre-1888 Romanisation, such as "Kowloon", "Un Chau Street", and "Hong Kong" itself, which would be "Kau Lung", "Yuen Chau Street", and "Heung Kong" under this system, respectively.
Romanisation of names is mandatory in government identification documents such as identity cards issued by the Registration of Persons Office. This standard is used by the office by default though individuals are at liberty to choose their own spelling or another romanisation system.

Spelling

All tones are omitted as are distinctions between aspirated and unaspirated stops. The distinctions between the long vowel and the short vowel are omitted like Fat and Fat.
Some of the inconsistencies are due to a distinction that has been lost historically. These consonants are no longer distinguished in present-day speech.
The following table of geographical names illustrates the standard.

Consonants

Initials

IPA	Yale	Jyutping	HKG	Example	in Chinese
pʰ	p	p	p	Sai Ying Pun	西營盤
p	b	b	p	Po Lam	寶琳
tʰ	t	t	t	Tuen Mun	屯門
t	d	d	t	Tai O	大澳
kʰ	k	k	k	Kai Tak	啟德
k	g	g	k	Tai Kok Tsui	大角咀
kʰw	kw	kw	kw	Kwai Chung	葵涌
kw	gw	gw	kw	Cha Kwo Ling	茶果嶺
m	m	m	m	Yau Ma Tei	油麻地
n	n	n	n	Nam Cheong	南昌
ŋ	ng	ng	ng	Ngau Tau Kok	牛頭角
l	l	l	l	Lam Tin	藍田
f	f	f	f	Fo Tan	火炭
s	s	s	s	So Kon Po	掃捍埔
s	s	s	sh	Shau Kei Wan	筲箕灣
h	h	h	h	Hang Hau	坑口
j	y	j	y	Yau Tong	油塘
w	w	w	w	Wong Tai Sin	黃大仙
tsʰ/tʃʰ	ch	c	ch	Heng Fa Chuen	杏花邨
tsʰ	ch	c	ts	Yau Yat Tsuen	又一村
ts	j	z	ts	Tsim Sha Tsui	尖沙咀

Finals

IPA	Yale	Jyutping	HKG	Example	in Chinese
-p	-p	-p	-p	Ap Lei Chau	鴨脷洲
-t	-t	-t	-t	Tsat Tsz Mui	七姊妹
-k	-k	-k	-k	Shek O	石澳
-m	-m	-m	-m	Sham Shui Po	深水埗
-n	-n	-n	-n	Tsuen Wan	荃灣
-ŋ	-ng	-ng	-ng	Tsing Yi	青衣

Vowels, diphthongs, and syllabic consonants

The standard pronunciation of 五 is. However, a more common pronunciation in Hong Kong is and many words are merging with it. The only word that was originally pronounced as m̩ is "唔" and it is not used in place names.