APPENDIX A
Normally Deployed Active Barrier Safety System
position Manual - Auto - Local mode selector switch for the Outbound
Barriers, one Inbound Fill switch, one Inbound Release switch, one Outbound
Fill switch, one Outbound Release switch, and one set of Open and Close
switches for each barrier. Keys for the inbound and outbound mode switches
shall be unique and shall be removable in the Local positions only. Also per
the Drawings, the Guard Booth Control Panels shall have one Inbound Fill
switch, one Inbound Release switch, one Outbound Fill switch, and one
Outbound Release switch. In the Barrier Normally Closed Safety Scheme, at
least one barrier is closed in both the inbound and outbound lanes,
therefore, the EFO function (and associated controls) is not required.
2.1.2 In the Manual mode of the Inbound Barriers' mode selector switch, the
Close and Open switches on the Master Control Panel shall be activated for
the inbound barriers, but the Fill and Release switches on the Master and
Guard Booth Control Panels shall be deactivated for inbound barriers. In the
Auto mode of the Inbound Barriers' mode selector switch, the Close and Open
switches on the Master Control Panel shall be deactivated for the inbound
barriers and the Fill and Release switches on the Master and Guard Booth
Panels shall be activated for the inbound barriers. In the Local position of
the inbound barriers' Manual - Auto - Local selector switch, the Close and
Open switches on the Master Control Panel shall be deactivated and the Fill
and Release switches on the Master and Guard Booth Control Panels shall also
be deactivated for the inbound barriers. Inbound barriers can only by
operated by controls located locally at the barriers. The above requirements
also apply to the control switches and control logic for the outbound
barriers.
2.1.3 Under normal operations, the Inbound Barriers and Outbound Barriers
Manual - Auto - Local mode selector switches on the Master Control Panel will
be in the Auto positions. Barriers in the inbound or outbound lane(s) can be
individually operated by placing the appropriate Inbound or Outbound Mode
switch to the Manual mode. Once in the Manual mode, individual barriers can
be opened and closed from the Open and Close switches on the Master Control
Panel. The Local position of each barrier's Manual - Auto-Local selector
switch can be used when maintenance needs to be performed on a barrier.
Maintenance personnel would place the Inbound or Outbound Manual - Auto -
Local mode switch in the Local position and then remove and retain the key,
thus locking out all control of those barriers from the Master and Guard
Booth Control Panels. Maintenance personnel would also have to block and
mark the lane ahead of the barriers and also lock and tag out certain
equipment at the barriers per the barrier manufacturer's recommendations for
the type of maintenance to be performed.
3 TRAFFIC SIGNAL AND BARRIER CONTROLS.
3.1 BARRIER LAYOUT AND DESIGNATIONS. Each inbound and outbound lane shall
have 2 barriers per lane arranged in a sally port to entrap a vehicle or
vehicles between them. The space between barriers shall be long enough for
the longest vehicle anticipated for the ACP. The space may be made longer
to accommodate multiple vehicles in a platooning type arrangement. Per the
Drawings, the initial barrier from the perspective of innocent motorists is
designated A, and the final barrier is designated B for inbound lanes. The
initial barrier, again from the perspective of the innocent motorists, is
designated C, and the final barrier is designated D for outbound lanes.
3.2 AUTO MODE OF OPERATION.
SECTION 34 41 26.00 10 Page 54