Valley curves are required to be introduced at the situations where
A) a negative grade meets a positive grade
B) a negative grade meets another milder negative grade
C) a negative grade meets a steeper positive grade
D) all of the above
Correct Answer:
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A)In
Q16: The traffic manoeuvre means
A)diverging
B)merging
C)crossing
D)all of these
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A)regulatory sign
B)warning
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