h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

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Greebs..xx

Erm... they arrive at different times during the morning

Or one is a ghost train

Yes, I thought the same as Danny B.

It's a double deck bridge.

Is it Rameses XIV?

B

(with apologies to anyone who has no idea what I'm talking about)

B

To figure this one out I decided to do it practicly . . . again. I rearanged the timetables of a similar bridge to have it so that two trains would be going across it from opposite sides at the same time. Here are my results:

1) The trains will crash.
2) There will be many fatalities.
3) There will be many more injured.
4) The bridge will collapse.
5) There will be trafic chaos.

I am currently on a plane to New Zealand in an attempt to evade the police manhunt.

Too obvious, they are both moving in the same direction, but as usual I got beat to it. Stoopid dang time differences...

oops didn't read the question properly. (or any of the other answers) how embarrassing.... hmm how does one do an un-post in here?

Double decked bridge is possibly it... but I'll give it more thought, perhaps the trains exist in parrallel universes?

I think I have it. A train has to run on two tracks, so there are a total of four tracks. | | | | Like so. The middle two merge on the bridge making it | | | , and so the two trains run right next to each other and the poor man who's stuck his hand out the window.

One train is goijng forward and the other is reversing therefore in the opposite direction but the direction of travel is the same and a collision is avoided.

Boy I was busy yesterday.

Phew you lot have certainly been busy over the past day... ~big huggles~

Greebs..xx

Both stop at a station in the middle of the bridge deposit their passengers and then go back the way they came

My idea is this: One train comes on as the other comes on. Where the tracks join, one goes along the side track and the other continues on it's way.

Do they both convert into monorail trains?

B

Nothing in the question says they have to be on the bridge at the same moment, so I agree that they will safely cross at different times.

Well, a "morning" is all the time between a second past midnight, to a second to midday, so the chances of the two trains being on the short section of track at the same time are actually pretty slim, I'd say. The first train has completely passed the bridge by the time the second arrives.

RF

I figured that they arrived at different times but on the same morning. I did like the idea that there is a station in the middle of the bridge so they arrive and depart in opposite directions...

Ok, ok so they're there at different times - how boring - I still vote for parallel universes, a much more interesting theory