of Defile Markers
Defile markers are used to guide the traffic into the approach to the bridge.
Six defile markers are deployed, three on either side of the bridge at the approach and six
at the exit of the bridge. They are positioned to form a funnel shaped area so that traffic is
guided onto the center of the approach ramps of the bridge.
Red and white marker tape is tied between the defile markers to assist in guiding traffic on
to the bridge.
EYE INJURY. WHEN DRIVING ROADFORM SPIKES INTO THE GROUND THERE IS A
POSSIBILITY THAT SMALL METAL FRAGMENTS MAY BE CREATED. PERSONNEL MUST
WEAR EYE PROTECTION. FAILURE TO HEED THIS INSTRUCTION COULD LEAD TO INJURY
TO THE EYES.
When deploying defile markers in any ground, use a road form spike pin inserted into the
ground approximately 6in (152.4mm) (use sledge hammer or pneumatic hammer) and
place the defile marker so that defile marker box section is fitted over the head of the road
When soft ground permits, the defile marker may be pushed into the ground for increased