This layout illustrates a
bi-direc onal traffic system with
controlled access entry (card
reader, radio control, etc.) and a
free exit gate. The gate is closed
by a TIMER TO CLOSE. The ming
to close starts when all loops are
clear. The mer is adjustable
from 1 to 99 seconds.
For a single-direc onal system,
the FREE EXIT loop is replaced by
the FREE EXIT loop is replaced by
an OBSTRUCTION loop.
an OBSTRUCTION loop.
DIMENSIONS
A = 6 to 8 feet (2 meters to 243cm)
B = 6 to 12 (2m to 366cm)
C = Maintain 4 (122cm)
D = Maintain 5 (152cm) between loop
and edge of roadway. No vehicle can pass
through such a small area and escape detec on.
E = Maximum 4 (122cm). Vehicle must be
able to pass from one loop to the next
without loss of detec on.
F = The distance from gate to FREE EXIT
LOOP is equal to the gate panel length
plus 4 (122cm).
G = 4 to 6 (122cm to 2m).
Vehicle Detectors and Loop Layout for Openings greater than 28 feet*
* NOTE: A minimum of three (3) detectors are required for this type of gate.
Figure 73. Vehicle Detectors and Loop Layout for Openings Greater than 28 feet*
117
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PUBLIC SIDE
ENTER
OBSTRUCTION
LOOP
A
C
CENTER
D
LOOP
E
FREE EXIT
or
OBSTRUCTION
LOOP
SECURE SIDE
SWINGSMART DC PROGRAMMING AND OPERATIONS MANUAL
EXIT
OBSTRUCTION
LOOP
F
CENTER
LOOP
G
FREE EXIT
or
OBSTRUCTION
LOOP
REFERENCE
ACCESS CONTROL DEVICE
(Card reader, etc.)
B
MX3640-01 REV. D ©2018