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S.I. 1964/1857
4079
SCHEDULE 1 PART I—Warning signs (contd.)
Headroom at hazard
531
Available width of headroom at hazard
532
Overhead cable
(See Direction 11)
533
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Plate for use with sign in diagram 533
( See Directions 11 and 12 )
534
Load gauge to afford audible warning of the maximum safe height of vehicles about to pass under electrified overhead cables
(See Direction 22)
536
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Plate for use with sign in diagram 533
(See Directions 11 and 12)
535
