Weight
Cluster True-False
(Each question of this kind consists of a series of statements
related to the stem that precedes them. Indicate which are
true and which false with respect to the stem
5.
Grade crossings are often the site of numerous motor vehicle accidents. It is also true of
such crossings that they:
3
a. Necessitate the use of immovable paving material.
3
b. Require deeper flangeways when constructed on 8-degree curves.
3
c. Are more popular now than 50 years ago.
3
d. Are built with sand between the tracks.
3
e. Can be the cause of derailments.
3
f.
Are the source of numerous maintenance difficulties.
6.
To help keep heaved track usable in winter, some of the remedies are:
2
a. Installing electric or gas heaters.
2
b. Installing track shims.
2
c. Removing the tie plates.
2
d. Removing ballast at high spots.
2
e. Treating ballast with salt water.
7.
The Corps of Engineers is to construct a highway grade crossing in your territory. Which of
the following specifications would you attempt to have included in the construction? That:
2
a. The crossing be constructed of durable material that cannot easily be torn up.
2
b. No rail joints occur within the limits of the crossing.
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