# Loop line (Chongqing Rail Transit)

The Loop line of Chongqing Rail Transit is a rapid transit loop line in Chongqing, China. The line is also known as Line 0.
The metro line serves three major railway stations in Chongqing: Chongqing North railway station, Shapingba railway station, and Chongqing West railway station.

## History

The line began construction on October 28, 2013.
The northeastern section was opened on December 28, 2018. The southern section with the Egongyan Rail Transit Bridge opened on December 30, 2019. The remaining section opened on January 20, 2021.

## Opening timeline

| Segment | Commencement | Length | Station(s) | Name |
| Chongqing Library – Haixialu | 28 December 2018 | 33.7 km (20.94 mi) | 17 | Northeastern Section |
| Min'an Ave. | 11 January 2019 | infill station | 1 | |
| Luojiaba & Danzishi | 1 July 2019 | infill stations | 2 | |
| Nanqiaosi | 15 December 2019 | infill station | 1 | |
| Haixialu – Erlang | 30 December 2019 | 9.5 km (5.90 mi) | 5 | Southern section |
| Chongqing Library – Chongqing West Railway Station – Erlang | 20 January 2021 | 7.6 km (4.72 mi) | 4 | Remaining section |
| Tianxingqiao & Renji | 4 February 2021 | infill stations | 2 | |
| Shanghao | 7 October 2023 | infill station | 1 | |

## Stations

| Service routes | Service routes | Station № | Station name | Station name | Connections | Distance km | Distance km | Location |
| E | L | Station № | English | Chinese | Connections | Distance km | Distance km | Location |
| ↑ Loop towards Hualong ↑ |||||||||
| ↑ | | Through-service to/from Tiaodeng via Line 5 | Through-service to/from Tiaodeng via Line 5 | Through-service to/from Tiaodeng via Line 5 | Through-service to/from Tiaodeng via Line 5 | Through-service to/from Tiaodeng via Line 5 | Through-service to/from Tiaodeng via Line 5 | Through-service to/from Tiaodeng via Line 5 |
| ● | ● | | Chongqing West Station | 重庆西站 | Line 5 CXW | 1.6 | 50.9 | Shapingba |
| ● | ● | | Shangqiao | 上桥 | | 2.0 | 2.0 | Shapingba |
| ｜ | ● | | Fengmingshan | 凤鸣山 | | 1.1 | 3.1 | Shapingba |
| ● | ● | | Chongqing Library | 重庆图书馆 | | 1.2 | 4.3 | Shapingba |
| ｜ | ● | | Tianxingqiao | 天星桥 | | 1.1 | 5.4 | Shapingba |
| ● | ● | | Shapingba | 沙坪坝 | Line 1 Line 9 27 CYW | 1.6 | 7.0 | Shapingba |
| ｜ | ● | | Chongqing University | 重庆大学 | | 1.5 | 8.5 | Shapingba |
| ｜ | ● | | Yudaishan | 玉带山 | 4 | 2.0 | 10.5 | Jiangbei |
| ｜ | ● | | Nanqiaosi | 南桥寺 | | 1.7 | 12.2 | Jiangbei |
| ｜ | ● | | Sports Park | 体育公园 | | 1.2 | 13.4 | Yubei |
| ● | ● | | Ranjiaba | 冉家坝 | Line 5 Line 6 | 1.1 | 14.5 | Yubei |
| ｜ | ● | | Dongbu Park | 动步公园 | | 1.0 | 15.5 | Yubei |
| ｜ | ● | | Honghudonglu | 洪湖东路 | | 0.9 | 16.4 | Yubei |
| ● | ● | | Min'an Ave. | 民安大道 | Line 4 | 1.6 | 18.0 | Yubei |
| ↓ | | Through-service to/from Tangjiatuo via Line 4 | Through-service to/from Tangjiatuo via Line 4 | Through-service to/from Tangjiatuo via Line 4 | Through-service to/from Tangjiatuo via Line 4 | Through-service to/from Tangjiatuo via Line 4 | Through-service to/from Tangjiatuo via Line 4 | Through-service to/from Tangjiatuo via Line 4 |
| | ● | | Chongqing N. Station S. Square | 重庆北站南广场 | Line 3 Line 10 YW CUW | 2.1 | 20.1 | Yubei |
| | ● | | Yulu | 渝鲁 | | 2.1 | 22.2 | Jiangbei |
| | ● | | Wulidian | 五里店 | Line 6 Line 9 | 1.5 | 23.7 | Jiangbei |
| | ● | | Danzishi | 弹子石 | | 2.6 | 26.3 | Nan'an |
| | ● | | Tushan | 涂山 | | 1.6 | 27.9 | Nan'an |
| | ● | | Renji | 仁济 | | 1.3 | 29.2 | Nan'an |
| | ● | | Shangxinjie | 上新街 | Line 6 | 1.0 | 30.2 | Nan'an |
| | ● | | Shanghao | 上浩 | | 1.1 | 31.3 | Nan'an |
| | ● | | Haitangxi | 海棠溪 | | 1.5 | 32.8 | Nan'an |
| | ● | | Luojiaba | 罗家坝 | | 1.0 | 33.8 | Nan'an |
| | ● | | Sigongli | 四公里 | Line 3 | 1.1 | 34.9 | Nan'an |
| | ● | | Nanhu | 南湖 | Line 10 | 2.0 | 36.9 | Nan'an |
| | ● | | Haixialu | 海峡路 | | 1.1 | 38.0 | Nan'an |
| | ● | | Xiejiawan | 谢家湾 | Line 2 | 2.6 | 40.6 | Jiulongpo |
| | ● | | Olympic Sports Center | 奥体中心 | Line 18 | 1.9 | 42.5 | Jiulongpo |
| | ● | | Chenjiaping | 陈家坪 | | 1.3 | 43.8 | Jiulongpo |
| | ● | | Caiyunhu | 彩云湖 | | 2.0 | 45.8 | Jiulongpo |
| | ● | | Erlang | 二郎 | | 1.7 | 47.5 | Jiulongpo |
| | ● | | Hualong | 华龙 | | 1.7 | 49.2 | Jiulongpo |
| ↓ Loop towards Chongqing West ↓ |||||||||
* ↑ The former translation is South Square of Chongqingbei Railway Station, which has been replaced since the opening of Line 10's station

## Accident

On January 8, 2019, a train accident occurred in the tunnel between Haixialu and Nanhu where a train (000141-000146) struck an unsecured and improperly opened civil defense blast door. As a result, one person was killed and three people were injured.Two cars (000141 and 000142) have been out of service ever since the incident and stored in CRRC Chongqing Changchun Vehicle separately.