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SUBSTITUTE EQUIPMENT--ALL EQUIPMENT AND MATERIAL THAT THE CONTRACTOR PROPOSES TO PROVIDE SHALL CONFORM TO THESE SPECIFICATIONS AND PLANS, AND A LIST OF SUBSTITUTE EQUIPMENT AND/OR MATERIALS ALONG WITH A WRITTEN DESCRIPTION SUMMARY DESCRIBING THE FUNCTIONS OF THE COMPONENTS WHICH THE SUPPLIER PROPOSES TO PROVIDE SHALL BE SUBMITTED. IN ALL CASES, THE JUDGMENT OF THE ENGINEER SHALL BE FINAL AS TO WHETHER SUBSTITUTE EQUIPMENT AND/OR MATERIALS RECOMMENDED BY THE CONTRACTOR CONFORM TO THE INTENT OF THESE SPECIFICATIONS AND IS ACCEPTABLE FOR USE. FIELD TESTING AND TURN-ON--When notified by the Engineer, the Contractor shall arrange to have a manufacturer service representative, qualified to work on the central master controller, present at the time the equipment is turned on. The cost for this service shall be considered as included in the contract price for the equipment, and no additional payment will be allowed. CENTRAL MASTER CONTROL EQUIPMENT --System Coordination shall consist of supervision by a VMS-220 master y means o a system controller or interface unit located in each local controller cabinet. The VMS-220 master shall consist of a pyramidic, hierarchical structure of multiple microcomputers, and shall be furnished as part of this contract. The YMS-220 master shall be in accordance with the following provisions. All local controllers and support equipment shall be in compliance with the specified system operation. Free Operation shall consist of independent, fully-actuated operation, an s a resu t when system coordination is not in effect. The system shall (a) measure and evaluate traffic conditions within the traffic areas controlled by the system: and as result of these evaluations shall (b) select, implement and execute appropriate master system control strategies to optimize the flow of traffic through and within the system controlled traffic areas. Local i ntersection controller units may be supervised through multiplex and telemetry circuits i ntegral with the controller units or through local interface units located in the local intersection controller cabinets. Local interface units shall also be available. When installed with the necessary cabinet wiring, the interface units shall enable the existing controller "Force-off", "Phase Omit", "Hold", and "Ped Omit" to the extent of the local controller unit capabilities. The following equipment and services shall be provided: 1. VMS-220 and auxiliary equipment, as described in letter quotation of September 28, 1982, (including 80 hours of system operational training). -2-