It served the purpose of a Spanish solution, allowing passengers to exit both sides of subway cars as the express trains would open the doors on both sides.
The express trains would open the doors on both sides. It served the purpose of a Spanish solution, allowing passengers to exit both sides of subway cars.
It served the purpose of a Spanish solution, allowing passengers to exit both sides of subway cars. The express trains would open the doors on both sides.
It served the purpose of a Spanish solution, allowing passengers to exit both sides of subway cars. The express trains would open the doors on both sides.