Where was it built?
Ankara, Turkey — for a railway in Bangkok, Thailand.
Bozankaya and Siemens worked together on this fleet. Where a train is made and where it works can be different countries.
Thailand · Metro trains
BTS Skytrain EMU-A2
Bangkok · Green Line
BTS means Bangkok Mass Transit System. Its Skytrains travel above the streets, helping people cross the busy city. This four-car fleet was built by Siemens and Bozankaya. It takes electricity from a third rail beside the running rails.
- Speed
- 50mph80 km/hTop service speed
- Year
- 2018First delivery
- Maker
- Siemens & Bozankaya · Ankara, Turkey
- Job
- Elevated city passenger journeys
Turn it. Take it apart. Discover.
Explore your train
Interactive model loads here. Read the train guide below while it gets ready.
3D modelDrag to turn · Pinch to zoom · Tap a number to explore
How does a metro collect electricity?
Pickup shoes collect electricity from a third rail beside the track. Electrical equipment supplies motors that turn the wheels. The roof units help keep passengers cool.
- 1The metro driver’s cabAt either end of the train
The driver watches the track through the front windows. A cab at each end lets the train reverse at a terminus.
Look deeper
These four-car Skytrains run on Bangkok’s elevated Green Line. First delivery was in 2018; the whole 22-train fleet was in passenger service by December 2019. Siemens specifies an 80 km/h maximum operating speed and 750 V DC third-rail power. This is the fleet’s delivery date, not the original BTS network opening.
- 2Space for city journeysInside every car
Wide doors help people get on and off at busy stations. The connected cars carry seated and standing passengers.
Look deeper
This BTS fleet has four cars and four pairs of doors on each side of each car.
- 3Air conditioning on the roofAbove the passenger space
Roof air-conditioning units help keep passengers comfortable in Bangkok’s hot climate.
Look deeper
These roof units are not pantographs. The train collects its electricity beside the track.
- 4Wheels, suspension and motorsBeneath the floor
Wheel assemblies called bogies support the train. Electric motors turn powered wheelsets.
Look deeper
The model shows a simplified arrangement of wheelsets and suspension.
- 5Taking power from the third railLow down beside the wheels
Small pickup shoes touch a separate power rail beside the two rails the wheels run on.
Look deeper
The power passes through electrical equipment before reaching the traction motors. The pickup shoes and equipment locations here are illustrative.
Get to know BTS Skytrain EMU-A2
What is it made from?
Its car body is made from lightweight stainless steel.
Stainless steel resists rust. Engineers shape the body to keep it strong without making it unnecessarily heavy. The windows and electrical equipment use other materials.
How does it move — and what is its job?
City trains need to start and stop efficiently, not win a bullet-train race.
Electric motors turn the wheels. Frequent stations mean acceleration, braking and quick boarding matter as much as maximum speed. This fleet collects electricity from a third rail beside the track.
When was it built?
The first trains in this fleet arrived in 2018.
All 22 were carrying passengers by December 2019. Delivery means arrival from the factory; it is not the same as the day construction began.
Where does it run — or where did it run?
The elevated BTS Green Line in Bangkok, Thailand.
This entry is the Siemens–Bozankaya four-car fleet. Other trains also use the BTS network.
What are we still researching?
We leave gaps visible instead of guessing. The original catalogue and our learning model do not establish every real-world specification.
Is it still running today?
The manufacturer’s 2024 datasheet describes this fleet in passenger service. We have not independently confirmed the exact fleet’s status for September 2026.
How power reaches the wheels
Follow these steps, then find the matching sections in the model above.
- 1
Third rail
A pickup shoe collects electricity beside the track.
- 2
Electrical equipment
It controls the supply reaching the motors.
- 3
Traction motors
A motor turns electrical energy into movement.
- 4
Wheels
Powered wheelsets turn against the rails.
Read the wheels
Look underneath: wheelsets support the train and carry the forces used to accelerate and brake. The model simplifies the real running gear.
What does its speed really mean?
Published service maximum. A maximum speed describes particular conditions; station stops, curves, signals and track limits make an actual journey slower.
A fast train is a whole system: vehicle, track, electricity or fuel, brakes, signalling and trained people. A race in the game is a simplified comparison.
What curious kids ask
Why does it have so many doors?
City trains stop often. Several wide doorways let people leave and board together, helping the train spend less time waiting in a station.
Does the driver steer like a car?
No steering wheel is needed to choose a direction. The rails guide the wheelsets. At a junction, movable sections of rail called points or switches guide the train onto another track. The driver controls speed and braking.
Why can’t it stop straight away?
A moving train has energy. Brakes must remove that energy to slow it down. A heavy train travelling fast needs room to stop, so railway signals help keep trains safely separated.
Meet these trains next
Compare how they look, what they carry and where their power comes from.
Bangkok MRT Blue Line 
E5 Shinkansen 
NER Electric Locomotive Little railway dictionary
Bogie / truck
A frame holding wheelsets beneath a vehicle. It can turn relative to the body to help the train follow curves.
Gauge
The distance between the inside faces of the two running rails. Narrow gauge means closer rails; loading gauge describes the space a train may occupy.
Pantograph
A folding roof collector that stays in contact with an overhead power wire.
Traction
The force used to pull or propel the train. Grip between wheels and rails limits how much force can be used.
Multiple unit
A train with propulsion equipment within its passenger vehicles, operated together from one cab.
Locomotive
A powered vehicle whose main job is to move other railway vehicles.
Shunting / switching
Moving and arranging vehicles in a yard, often at low speed.
Livery
The colours, stripes, logos and other markings painted or applied to a train.
Service speed
The permitted speed for passenger or freight operation on a suitable section. It is not the journey average.
Record speed
A speed achieved on a particular test or record attempt, sometimes with special equipment and conditions.
Tender
A vehicle coupled to a steam locomotive to carry extra water and fuel. A tank engine carries water on the locomotive itself.
Prototype
An early vehicle built to develop and test a design before a production fleet.
Sources & reading
Follow the operator, builder and museum references below for more detail. Links beside an answer show which source supports that answer.
Edition 2026-09-27. Catalogue background is carried forward from the original collection; it is not a new independent verification. Engineering explanations describe principles. Portraits and 3D models are illustrations, with simplified parts and proportions. This is an independent learning guide, not an operator’s timetable.