12-16  Monitoring of Urban Road Traffic Noise in Major Cities (2006)
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	236000	39.6	36.0	5422	69.7
Tianjin	274000	36000	13.1	28.8	2221	67.7
Shijiazhuang	179402	14600	8.1	29.5	1885	66.6
Taiyuan	137600	24570	17.9	23.0	2125	68.5
Hohhot	184027	80228	43.6	30.2	2009	67.9
Shenyang	144000	51200	35.6	33.7	2266	68.9
Changchun	123600	15200	12.3	30.8	2812	68.0
Harbin	120200	17400	14.5	16.8	2410	67.8
Shanghai	212600	153500	72.2	19.9	2164	72.0
Nanjing	170900	44600	26.1	31.0	2021	68.3
Hangzhou	265265	28785	10.9	16.3	1833	67.3
Hefei	90600	0	0.0	38.6	2487	67.5
Fuzhou	111200	14100	12.7	22.9	2614	68.3
Nanchang	67500	29590	43.8	31.2	3250	69.9
Jinan	161400	28200	17.5	52.6	2466	68.6
Zhengzhou	101895	8704	8.5	43.5	2934	65.8
Wuhan	254279	94840	37.3	21.6	2155	66.5
Changsha	95443	37430	39.2	32.5	2716	69.9
Guangzhou	247360	83100	33.6	24.0	3489	69.4
Nanning	139750	71920	51.5	19.8	3310	69.8
Haikou	99650	11000	11.0	34.2	2443	67.4
Chongqing	456160	64340	14.1	16.2	1698	67.7
Chengdu	399829	166830	41.7	44.3	3185	69.3
Guiyang	56780	11940	21.0	36.0	2722	67.9
Kunming	91500	33200	36.3	30.2	2272	69.7
Lhasa	52950	29050	54.9	20.1	815	70.0
Xi'an	204017	42230	20.7	24.3	2910	67.9
Lanzhou	125400	13630	10.9	19.7	1479	68.1
Xining	85680	27870	32.5	17.1	2074	69.8
Yinchuan	94400	31000	32.8	32.2	1699	67.5
Urumqi	209330	117982	56.4	42.9	1991	70.4