SCR-operated EP2D or VL11M electric locomotives on the Armenian electrified segment (3 kV DC); diesel backup VL10 or TEM-series on the Georgian segment where electrification is partial. Modern Transmashholding carriages with air-conditioning, vacuum toilet systems, and bi-standard couplings for the cross-border interchange at Ayrum/Sadakhlo.
Locomotive Weight
EP2D electric: 138 t (6-axle, Bo'Bo'Bo'); VL11M: 184 t (6-axle, Bo'Bo'Bo'); VL10 (legacy): 192 t. Georgian segment typically uses M62 (ČKD T679, 120 t, 1,500 hp diesel) or modern TEM18 (Transmashholding, 126 t, 3,000 hp).
Track Gauge
1,520 mm Russian gauge throughout (Armenia and Georgia share gauge) — historically the Transcaucasian Railway alignment.
Braking Technology
Pneumatic air brakes standard on all SCR and Georgian Railway rolling stock. Modern EP2D and Transmashholding carriages use electropneumatic braking with electronic anti-skid control.
Route Engineering Challenges
Lori Gorge crossing in northern Armenia — deep Debed River canyon requiring multiple bridges and embankments
Caucasus watershed crossing at elevation — Surami Pass (949 m) between Tbilisi and Kutaisi with significant gradient changes
Ayrum/Sadakhlo border crossing — technical pause for onboard customs and passport control (30–60 min)
Tbilisi junction transit requires routing through the city rail node as an intermediate stop
Approach to Batumi along the Kolkheti lowlands — flat but coastal engineering with drainage challenges in the subtropical climate
No direct Armenia–Turkey rail link (border closed since 1993); all international traffic routed via Georgia
Nagorno-Karabakh corridor (Lachin rail link) closed since 2023 Azerbaijan offensive — formerly provided second Armenian rail exit
Single-track alignment on much of the Armenian segment limits capacity to one round-trip per day
Maximum Speed
100 km/h (Armenia) / 120 km/h (Georgia, on dedicated segments) / 80 km/h (Surami Pass)
Gauge
1,520 mm Russian gauge (5 ft) — standard for Armenia and Georgia
Yes — all carriages equipped (Transmashholding 61-4444 series or modernized 61-4174 series)
Shower Facilities
SV/Lux carriages only — one shared shower per premium car
Operator
South Caucasus Railway (Armenia) / Georgian Railway (Georgia)
Line Length
551 km total (Yerevan to Batumi via Tbilisi and Kutaisi)
Journey Time
Approximately 17.5 hours including border pause
Border Crossings
Single crossing at Ayrum (Armenia) / Sadakhlo (Georgia) — officials board the train
Surami Pass Elevation
949 m — highest point on the corridor
Lori Gorge Depth
Up to 500 m — deepest gorge on the Armenian segment
Cross-border Connections
Armenia–Georgia (operational); Georgia–Turkey via BTK (standard gauge, not this route); Armenia–Turkey (closed since 1993); Azerbaijan via Georgia (operational via Tbilisi)
Quick Facts
Duration
17.5 hours
Distance
551 km
Est. Price
AMD 17,000–35,000 per person (approx. USD 44–91 — excellent value for a 17+ hour international journey)