Riddles for Train Enthusiasts and Railway Buffs

I pull a mile of freight with a heart of steel. What am I?

I display arrivals and departures with every minute counted. What am I?

I connect cars with couplers and squeal around bends. What am I?

I signal red, yellow, green to engineers. What am I?

I am the whistle that echoes across valleys. What am I?

I cross mountain passes with sky-high views. What am I?

I let miniature trains chug through living rooms. What am I?

I am the ticket that punches nostalgic journeys. What am I?

I am the sleeper car rocking travelers to rest. What am I?

I turned the West into a weekend ride. What am I?

I deliver mail faster than horse messengers. What am I?

I collect stories from every whistle-stop town. What am I?

I am the subway map twined beneath city streets. What am I?

I show train lovers which locomotives will pass next. What am I?

I wave from the caboose as the train disappears. What am I?