For the speed attained and the people that can be moved, no, old trains are highly inefficient in terms of impact on the environment.
They ran longer and were more environmental friendly.
What do you mean by safe, for the environment, YES
Older trains if they were steam depended on how hot the fire was and modern day trains have electronic devices
The same things modern trains are used for: hauling cargo and people.
Modern trains are powered by diesel or electricity. There are still some coal powered steam trains in service, mainly on tourist lines.
They are called steam trains because they are pulled by steam engines.
they are good in a way it depends on what you are talking about they are good for the environment they look good
Steam trains were first. they use both fire and water to produce steam and make the engine run.
There are 2.4 Steam Trains in the world as of 2012.
Trains can be seen in all their glory at the National Railway Museum in the town of York in the United Kingdom. Both classic steam trains to modern high speed trains are featured.
Trains Unlimited - 1997 Steam Trains was released on: USA: 27 October 1997
with steam.