Jul30*$+  Signal into Jubilee Line reversing siding at Wembley Park. Photographed by MRFS42

http://www.sucs.org/~cmckenna/photos/quizes/tq2/July/Jul30part1.jpg
http://www.sucs.org/~cmckenna/photos/quizes/tq2/July/Jul30part1sm.jpg
http://www.sucs.org/~cmckenna/photos/quizes/tq2/July/Jul30part2.jpg
http://www.sucs.org/~cmckenna/photos/quizes/tq2/July/Jul30part2sm.jpg
http://www.sucs.org/~cmckenna/photos/quizes/tq2/July/Jul30unmodified.jpg
http://www.sucs.org/~cmckenna/photos/quizes/tq2/July/Jul30unmodifiedsm.jpg

Question part 1:
[url=http://www.sucs.org/~cmckenna/photos/quizes/tq2/July/Jul30part1.jpg][img]http://www.sucs.org/~cmckenna/photos/quizes/tq2/July/Jul30part1sm.jpg[/img][/url]
(click for a larger version)

Question part 2:
[url=http://www.sucs.org/~cmckenna/photos/quizes/tq2/July/Jul30part2.jpg][img]http://www.sucs.org/~cmckenna/photos/quizes/tq2/July/Jul30part2sm.jpg[/img][/url]
(click for a larger version)

Answer:
[url=http://www.sucs.org/~cmckenna/photos/quizes/tq2/July/Jul30unmodified.jpg][img]http://www.sucs.org/~cmckenna/photos/quizes/tq2/July/Jul30unmodifiedsm.jpg[/img][/url]
(click for a larger version)