Line 21 (Guangzhou Metro)

Line 21 of the Guangzhou Metro (Chinese: 广州地铁21号线; pinyin: Guǎngzhōu Dìtiě Èrshíyīhàoxiàn) is a rapid transit rail line in Guangzhou.

Line 21
Line 21 train near Shantian
Overview
Other name(s)	M21 (plan name) Eastern New Town express line (Chinese: 东部新城快线)
Status	Operational
Owner	City of Guangzhou
Termini	Yuancun Zengcheng Square
Stations	21
Service
Type	Rapid transit
System	Guangzhou Metro
Services	2
Operator(s)	Guangzhou Metro Corporation
History
Opened	28 December 2018; 5 years ago (2018-12-28)
Technical
Line length	61.5 km (38.2 mi)[1]
Track gauge	1,435 mm (4 ft 8+1⁄2 in)
Electrification	Third rail, 1,500 V DC (Overhead lines with same voltage installed in depot)
Operating speed	120 km/h (75 mph)
Route map Legend Zengcheng Square Zhonggang Xiangling Stabling Yard Shantian Zhucun Fenggang Kengbei Zhongxin Zhenlong Depot/ Connection to Line 14 Zhenlong  14  Xinbaiguang IR  14  to Xinhe Zhenlongxi Jinkeng Guangshi Railway  THP1  to Xinfeng Lu Changping  THP1  Shuixi Stabling Yard  7  to Meidi Dadao Shuixi  THP1   7   THP1  to Xiangxue Subway Station Suyuan  6  Connection to Line 6/  6  to Xunfenggang to Xiangxue Science City Shenzhoulu Tianhe Smart City Daguannanlu Huangcun  4  Guangshen Railway  4  to Nansha Passenger Port Tangdong Guangfo circular IR  11  anti-clockwise  13  to Xinsha Connection to Line 11 and Line 13 Tianhe Park  11   13   13  to Chaoyang Yuancun  5   5  to Jiaokou to Wenchong  11  clockwise This diagram: view talk edit

Line 21 is an express suburban metro line along with Line 14. Both lines were envisioned to connect and promote development in the northeast regions of Guangzhou. Line 21's unique role means that it has many design features that make it different from other Guangzhou metro lines. For example, several stations have passing loops to allow for express and local stopping patterns and trains reach a maximum service speed of 120 km/h (75 mph). These considerations allow for passengers to travel from outer Guangzhou to the city center in one hour.^[2] Line 21 runs from Yuancun in Tianhe to Zengcheng Square in Zengcheng.^[3] The line is about 61.5 km (38.2 mi) long.^[1] The line has 40.1 km (24.9 mi) of underground sections, 6.8 km (4.2 mi) of mountain base tunneling and 14.7 km (9.1 mi) on viaducts.^[4] The line has a total of 21 stations, of which 17 are underground and 4 are elevated.

The eastern section of Line 21 opened on 28 December 2018^[5] and the western section opened on 20 December 2019.^[6]