2027 in rail transport

October

 * 🇺🇸 – Planned completion of the Penn Station Access project, designed to divert Metro-North Railroad trains to a new terminus at Penn Station in New York City.

Unknown date

 * 🇨🇦 – Calgary Green Line opening.
 * 🇨🇦 – Estimated completion of the Metrolinx Ontario Line in Toronto.
 * 🇨🇦 🇺🇸 – Amtrak Wolverine is planned to expand service to Windsor, Ontario, providing a cross-border connection between Amtrak and Via Rail.
 * 🇮🇱 – Expected opening of Haifa–Nazareth railway.
 * 🇰🇷 – quadruple-track upgrading of Gyeongbu HSR Line, claimed maximum speed increase to 400 km/h.
 * 🇰🇷 – Chuncheon–Sokcho Line 250 km/h operation starts.
 * 🇰🇷 – Estimated Suseo–Gwangju high-speed branch opening.
 * 🇰🇷 – Donghae Line 250 km/h operation starts.
 * 🇰🇷 – Honam Line 250 km/h operation starts.
 * 🇰🇷 – Gyeonggang Line 250 km/h operation starts.
 * 🇲🇲 – Planned completion of the Yangon Urban Mass Rapid Transit system.
 * 🇸🇬 – Stage 1 of the Jurong Region MRT line is expected to open.
 * 🇨🇭 – Lausanne Metro Line M2 New Lausanne-Gare extension.
 * 🇨🇭 – Lausanne Metro Line M3 opening.
 * 🇹🇭 – Estimated opening of the Chiang Mai light rail transit system.
 * 🇹🇭 – Bangkok Purple Line Southern Extension opening.
 * 🇺🇸 – Los Angeles Metro Rail D Line Extension Section 3 is planned to open, extending the D Line to Westwood/VA Hospital.
 * 🇺🇸 – Earliest estimated opening of the New York City Subway Second Avenue Subway Phase 2.
 * 🇺🇸 – The Atlanta Streetcar is planned to be extended to Ponce City Market along the BeltLine.
 * 🇺🇸 – Expected opening of the Southwest LRT extension of the Minneapolis Metro light rail system.
 * 🇺🇸 – Planned completion of Brightline West between Las Vegas, Nevada and Victor Valley, California.
 * 🇺🇸 – Planned opening of Maryland's Purple Line light rail after being delayed from 2022 and 2026.   The initial prolonged delay was due to the public–private partnership's dissolution in 2020.
 * 🇺🇸 – Phoenix Valley Metro Rail Capitol Extension is planned to open near the Arizona State Capitol.
 * 🇺🇸 – Metra plans to begin passenger service between Chicago and Rockford, Illinois.
 * 🇺🇸 – Planned completion of the Interborough Express from Bay Ridge, Brooklyn to Jackson Heights, Queens.
 * 🇺🇸 – Tentative scheduling for the start of Amtrak's New Orleans–Baton Rouge passenger rail.
 * 🇺🇸 – Earliest expected start of Northeast Corridor Rapid Transit Project service in Florida between MiamiCentral and Aventura.
 * 🇱🇺 – New Bettembourg-Luxembourg double-track railway line is expected to progressively enter service, reaching full service in 2028.
 * 🇱🇺 – Luxembourg tramway network extension "HOA" to 'Nei Hollerich' and Hollerich station is expected to open.
 * 🇺🇸 – Expected completion of the New Portal North Bridge on the Northeast Corridor.
 * 🇫🇷 – Opening of Paris Métro Line 18 from Massy-Palaiseau to Aéroport d'Orly.