SRT Dark Red Line

SRT Dark Red Line
SRT Dark Red Line train at the Rangsit railway station
Overview
Other name(s)	Thani Ratthaya Line
Native name	สายธานีรัถยา
Status	Operational (Phase 1)
Owner	State Railway of Thailand
Locale	Bangkok Metropolitan Region
Termini	Krung Thep Aphiwat Rangsit
Stations	10
Service
Type	Commuter rail
System	SRT Red Lines
Operator(s)	SRTET - SRT Electrified Train Company Limited
Depot(s)	Chatuchak, Bangkok
Rolling stock	Hitachi AT100
History
Opened	2 August 2021 (2021-08-02) (free trial service) 29 November 2021 (2021-11-29) (commercial service)[1][2]
Technical
Line length	26 km (16 mi)
Number of tracks	2
Character	Elevated
Track gauge	1,000 mm (3 ft 3+3⁄8 in) metre gauge
Electrification	25 kV 50 Hz AC overhead catenary
Operating speed	160 km/h (99 mph)
Signalling	Thales AlTrac for ERTMS (ETCS Level 1)[3]
Route map Legend km SRT Northern Line & Northeastern Line 00.0 future North extension 32.6 Thammasat University 29.9 Chiang Rak Bangkok University 26.2 Khlong Nueng 22.6 Rangsit 19.9 Lak Hok (Rangsit University) 13.8 Don Mueang 11.8 Kan Kheha MRT Pink Line 9.9 Lak Si  MRT  7.1 Thung Song Hong 5.6 Bang Khen 4.1 Wat Samian Nari 2.6 Chatuchak SRT Light Red Line to Taling Chan SRT Southern Line Bang Sue Junction 0.0 Krung Thep Aphiwat Central Terminal  SRT   MRT  MRT Blue Line Pradiphat 2.7 Sam Sen 3.7 Ratchawithi Ramathibodi Hospital Halt Airport Rail Link to Suvarnabhumi SRT Light Red Line to Hua Mak Yommarat Halt SRT Eastern Line 5.4 Yommarat Urupong Halt 6.5 Yotse 7.5 Hua Lamphong  MRT  MRT Blue Line 00.0 future South extension 00.0 Chao Phraya River Khlong San  BTS  BTS Silom Line MRT Purple Line Wongwian Yai  BTS   MRT  Wongwian Yai SRT Maeklong Railway Talat Phlu BTS Silom Line Wutthakat  BTS  Taksin Khlong Ton Sai Chom Thong Wat Sai Wat Singh Bang Bon Khan Keha Rang Sakae Rang Pho Sam Yaek Phrom Daen Thung Si Thong Bang Nam Chuet Khok Khwai Ban Khom Khlong Chak Maha Chai This diagram: view talk edit

The SRT Dark Red Line (also referred to as Thani Ratthaya Line (Thai: รถไฟชานเมือง สายธานีรัถยา)), is part of the SRT Red Line suburban railway system to serve the greater Bangkok Metropolitan Region running for 26 km (16 mi) between Krung Thep Aphiwat and Rangsit.

In mid-November 2020, the Minister of Transport announced that free trial operations would operate from March 2021 with full-service operations expected from November 2021.^[4] In late February 2021, the SRT confirmed that free trial operations will commence on 26 March 2021 with full commercial operations starting on 28 July 2021.^[5] However, in July 2021 the SRT again postponed the free trial operations until 2 August 2021.^[6]

The line finally opened for trial operations on 2 August 2021. Full commercial services began on 29 November 2021.^[7]

A much delayed 8.84 km (5.49 mi) extension of the line from Rangsit to Thammasat University was due to be tendered in June 2022.^[8] However, this was later delayed to December 2022 and then until February 2023. With the 14 May 2023 national elections and the ongoing delays in the formation of a new government, it is unlikely that the tenders will be issued until late 2023. In late June, a MOT source expressed that the extension is likely be taken to Cabinet for approval in October 2023 and if approved, a tender could be issued in the first quarter of 2024.^[9]