12-16  Monitoring of Urban Road Traffic Noise in Major Cities (2005)
City
	Total Length	Roads with	Percentage of	Average  Width	Average	Average
	of Roads	Excess Noise	Roads with	of Roads	Traffic	Noise
	(m)	(m)	Excess Noise	(m)	Volume	Value
			(%)		(car/hour)	dB(A)
Beijing	596092	253339	42.5	36.0	5422	69.5
Tianjin	276491	30138	10.9	28.8	2221	68.0
Shijiazhuang	179402	29780	16.6	29.5	1885	67.2
Taiyuan	137561	28889	21.0	23.0	2125	67.9
Hohhot	82649	34547	41.8	30.2	2009	69.7
Shenyang	144000	18144	12.6	33.7	2266	68.4
Changchun	123604	16563	13.4	30.8	2812	68.0
Harbin	120200	19352	16.1	16.8	2410	68.2
Shanghai	215600	162778	75.5	19.9	2164	72.0
Nanjing	165072	54969	33.3	31.0	2021	69.4
Hangzhou	189355	41847	22.1	16.3	1833	67.9
Hefei	90571			38.6	2487	68.0
Fuzhou	111230	14126	12.7	22.9	2614	68.3
Nanchang	67500	24907	36.9	31.2	3250	69.9
Jinan	161424	59565	36.9	52.6	2466	69.4
Zhengzhou	84115	11776	14.0	43.5	2934	67.6
Wuhan	263325	121129	46.0	21.6	2155	69.8
Changsha	95800	46463	48.5	32.5	2716	70.0
Guangzhou	247364	85093	34.4	24.0	3489	69.3
Nanning	102000	39780	39.0	19.8	3310	69.7
Haikou	107280	18774	17.5	34.2	2443	67.7
Chongqing	337005	74141	22.0	16.2	1698	67.9
Chengdu	322912	94613	29.3	44.3	3185	68.7
Guiyang	56780	26743	47.1	36.0	2722	69.6
Kunming	91494	30376	33.2	30.2	2272	69.7
Lhasa	52950	13078	24.7	20.1	815	67.8
Xi'an	204017	29378	14.4	24.3	2910	68.0
Lanzhou	125396	23825	19.0	19.7	1479	68.5
Xining	85680	32130	37.5	17.1	2074	69.8
Yinchuan	94280	33563	35.6	32.2	1699	68.0
Urumqi	212920	107098	50.3	42.9	1991	70.0