Ø
It
is given for proceeding slowly.
Ø
By
day it is shown by waving a green flag or one arm vertically up and down.
Ø
By
night it is shown by waving a green light vertically up and down.
Ø
When
the speed is to be reduced further the signal shall be given at a slower and
slower rate.
Ø
It
is exhibited by engineering staff for the trains passing over the work spot.