Is this feasible? I currently operate a tram/streetcar here in an American city. I speak Spanish, but am pretty rusty.

I'm starting to get sick of life in America. I've lived in Spain for a semester in college. I don't miss it like crazy, but I'm just bored with the American way of life, the quality of the housing, the women, the declining power of the dollar.

Would it be possible for me to move to another country and get a job operating rail transport? In the USA, to drive a tram/trolley/streetcar you don't need any kind of special license, you just go through a training period with the company. It's not like being a bus driver where you need a CDL B license.

Is this possible for rail? Could I move to Spain or Mexico or Brazil or Argentina and drive streetcars? Do they drug test? Are there countries where they don't drug test for rail?