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In the event of multiplex or other con~nunication failure from the <br />master to a particular intersection controller unit, the controller unit <br />shall revert to free operation. <br /> <br /> I ntersec ti on ..F1 .ash Prog r. am <br /> <br /> It shall be possible for the operator to place any intersection or <br />group of intersections in flash or to return the intersection or group <br />of intersections from flash to system control, from either immediate <br />keyboard command; or from a subsystem pattern number. <br /> <br /> Standby Operati on <br /> <br /> It shall be possible for the operator to place the local <br />intersection or group of intersections in the standby mode, or to take <br />the intersection or group of intersections out of the standby mode from <br />immediate keyboard command; or from subsystem pattern number. In <br />standby operation, intersection operation shall be independent upon <br />1 ocal control 1 er capabi 1 i ty. <br /> <br /> Standby/Free <br /> <br /> In standby or free operation, the intersection shall operate fixed <br />time, semi or fully actuated with volume-density on all phases as <br />pr.ogrammed, dependent upon local controller capability. The <br />intersection shall operate in standby under the following circumstances: <br /> <br />(a) If the intersection is not assigned to a coordinated subsystem, it <br /> shall operate in standby. Intersections may be assigned to a <br /> subsystem on a time of day/day of the week basis. <br /> <br />(b) If the intersection is part of a coordinated subsystem and the <br /> subsystem cycle length is zero, all intersections in that subsystem <br /> shal 1 operate free. <br /> <br />(c) If the interse.ction is part of a coordinated subsystem and the <br /> computed traffic levels exceed the upper limit or fall below the <br /> lower limit of programmed calculating levels, all intersections in <br /> that subsystem shall operate free. <br /> <br />Remote Timing of New Intersection Controllers <br /> <br />(a) It shall be possible for the operator to set, list, or change the <br /> fol 1 owing i ntersecti on parameters stored i n the remotely a 1 te rable <br /> Random Access Memory of a controller. <br /> <br /> Green Max <br /> Yellow Change* <br /> Red Clearance* <br /> Time Before Reduction <br /> Time to Reduce to Min Ext. <br /> Preset Ext. <br /> Min. Ext. <br /> Ped Walk <br /> <br /> -14- <br /> <br /> <br />