Posted by: Pdfprep
Post Date: January 13, 2021
What is the MINIMUM vertical separation between the top rail of a railroad track and telecommunications facilities placed beneath the track?
A . 508 mm (20 in)
B . 762 mm (30 in)
C . 1020 mm (40 in)
D . 1280 mm (50 in)
E . 1525 mm (60 in)
Answer: D