Eigenwillige Eisenbahnen

This cache used to be listed on Terracaching, hence the label on the cache.

This (puzzle) cache will show you some idiosyncratic waypoints concerning trains. Regular users of public transportation (such as me) may have an advantage. Find the waypoints (including final) - using careful preparation, it should take only one afternoon.

WP 0: Main station (N 51° 31.050, E 7°27.533)
You can reach all three waypoint directly (without changing your transportaion) starting from Dortmund mainstation, although it's not compulsory to start from this ugly station.

WP 1: Nearly a Lost Place

This interesting train station is nearly fallen into ruin. Graffiti are smeared on the brick walls. Although you wouldn't believe it, this station is still in use. What is the name of the station and what is the three digit number above the "2" on the right picture?

• C = 3rd digit
• D = 2nd digit+3
• F = 1st digit-1

Part 1 of the password: 1st letter (uppercase) and 3rd letter (lowercase) of the station's name.

WP 2: Barred

This idiosyncratic contraption is used to bar passengers from entering the platforms. The bar is automatically removed when a train enters the station. The reason for this strange device: you have to cross a track (which is usually strictly forbidden) to reach platform 2. The train station is a little bit like a cross between a frontier station and a town dump. What's the name of the company that build this odd contraption (you can find it at the position indicated at the right picture) and what's the station's name?

• B = 1st letter of the company's name (A=1 .. Z=26)
• H = 3rd Letter of the company's name (A=1 .. Z=26)-1

Password, Part 2: the 2nd and 4th letter of the company's name and 2nd and 3rd letter of the station's name (all letters are lowercase).

WP 3: Railway crossing

This last idiosyncratic station is a railway crossing - for trains(!), including a railway crossing gate. At this station there's a switch with a three digit number (W<number>Z). You can find the number at three places (two of them are shown at the second pictures). Which number does the switch have?
Please note: it's neither necessary nor legal to cross a track! There's a perfectly legal way to reach this station.

• A = first digit of the number
• E = second digit of the number+1
• G = third digit of the number+1