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EXHIBIT A <br /> FEC FLORIDA EAST COAST RAILWAY COMPANY <br /> ONE MALAGA STREET, P.O. DRAWER 1048, ST, AUGUSTINE, FLA. 32085 <br /> OFFICE OF THE GENERAL MANAGER. SIGNAL AND COMMMCATIONS <br /> Specifications for the Installation of Traffic Signal Synchronization <br /> Along Florida East Coast Railway right of way . <br /> RAILS <br /> l� _� <br /> JL jL TOP OF TIE <br /> TIEcic � <br /> SUBGRADE 4 <br /> 2 " SCHEDULE 40 PVC PIPE <br /> NOT TO SCALE <br /> 1 ) All traffic signal synchronization interconnection cable must be encased in conduit. The conduit is to be <br /> a schedule 40 Polyvinyl Chloride (PVC) or High Density Polyethylene (HDPE) . <br /> 2) The conduit will be installed by Jack and Bore, or Directional Bore under the track structure at a <br /> minimum depth of five and one half (5 %) feet below top of tie. In addition, a minimum depth of four <br /> (4) feet below grade will be maintained for the duration of the conduit ran while on the right of way. <br /> 3 ) The conduit will end in an at grade interconnecting pull box, provided by the installing agency or <br /> designated representative, and situated not greater than five (5 ) feet from the Railroad's instrument case. <br /> 4) The interconnection circuitry must be such that any break in the circuit will cause the traffic signal to <br /> enter the preemption mode . <br /> A. All new installations will utilize a dual break circuit design consisting of 1 set of normally closed dry <br /> contacts in line with the signal control hot or positive leg and 1 set of normally closed dry contacts in <br /> line with the signal control return or negative leg. <br /> B . In existing locations where a single break circuit is utilized, the control signal being sent to the <br /> Railroad' s instrument case must be at a potential other than neutral or ground. <br /> Updated : 5/14/03 - 1 - SyncSpec rv1 .doc <br />