Weight
2
14. The broken lines on the accompanying diagram indicate the guard rails on a two-track main
line (solid lines) as it enters an open-floor deck bridge. Which of the guard rails are
necessary?
A.
1 and 3.
B.
1 and 6.
C.
3 and 4.
D.
2 and 5.
2
15. Ice in poorly drained tunnels creates a problem because it causes:
A.
Derailments.
B.
Rails to buckle.
C.
Corroded flangeways.
D.
Excessive weed growth the next summer.
2
16. The season during which limited visibility is a serious safety hazard for the track
maintenance crew is:
A.
Summer.
B.
Winter.
C.
Fall.
D.
Spring.
30
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