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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)	(LeqdBA)

Beijing	596.1	260.0	43.6	36.0	5822	69.7
Tianjin	270.7	46.0	17.0	26.0	2214	68.2
Shijiazhuang	179.4	38.2	21.3	28.8	1513	67.8
Taiyuan	137.6	32.5	23.6	23.0	2154	67.8
Hohhot	82.6	26.4	32.0	29.3	2016	69.3

Shenyang	144.0	3.2	2.2	33.7	2048	67.8
Changchun	123.6	29.4	23.8	29.8	2670	68.4
Harbin	91.8	14.4	15.7	17.0	2120	68.3

Shanghai	213.9	112.5	52.6	20.0	2319	70.4
Nanjing	169.8	40.8	24.0	29.4	1678	68.9
Hangzhou	193.9	38.4	19.8	16.3	2078	67.9
Hefei	94.0	2.9	3.1	38.9	1933	67.7
Fuzhou	111.2	18.5	16.6	22.9	2393	68.4
Nanchang	67.5	41.6	61.7	29.3	2809	69.9
Jinan	206.6	64.0	31.0	46.9	2117	68.7

Zhengzhou	84.1	10.7	12.7	43.5	2019	68.0
Wuhan	223.4	123.8	55.4	18.7	2205	69.9
Changsha	95.8	50.2	52.4	28.3	2552	70.0
Guangzhou	237.1	65.2	27.5	23.0	3421	68.4
Nanning	102.0	54.1	53.0	19.8	3276	69.7
Haikou	107.3	20.4	19.0	34.2	2679	67.9

Chongqing	331.4	90.1	27.2	14.4	1461	67.5
Chengdu	313.2	58.3	18.6	44.7	2543	68.0
Guiyang	52.3	28.2	53.9	23.7	2466	70.2
Kunming	91.5	40.9	44.7	30.0	2044	70.5
Lhasa	52.9	11.5	21.8	17.5	622	67.4

Xi'an	195.1	69.7	35.7	23.6	2673	68.0
Lanzhou	125.4	47.6	38.0	19.7	1550	69.1
Xining	85.7	47.6	55.6	19.0	2247	70.6
Yinchuan	94.6	15.0	15.9	29.1	1502	68.0
Urumqi	112.5	63.2	56.2	40.0	1549	70.0