Patent ID: 6577247
Filing Date: 2003-06-10
Classification: G08G

Abstract:
A traffic control system, comprising:at least one pair of inherently-polarized traffic control signals (203, 204, 511, 513, 603, 706, 707, 708, 709, 922. 923, 924, 925, 942, 943, 944, 945) connected with opposite polarity orientation relative to one another; a plurality of polarity switches (404, 405, 703, 704, 705), an output of a first one of said polarity switches (404, 405, 703, 704, 705) connected (310, 311, 712, 713, 714, 906, 909, 910, 919, 920, 921, 936, 937, 938, 939) to at least a first end of one pair of said inherently-polarized traffic control signals (203, 204, 511, 513, 603, 706, 707, 708, 709, 922. 923, 924, 925, 942, 943, 944, 945), and an output of a second one of said polarity switches (404, 405, 703, 704, 705) connected (310, 311, 712, 713, 714, 906, 909, 910, 919, 920, 921, 936, 937, 938, 939) to at least a second end of said one pair of said inherently-polarized traffic control signals (203, 204, 511, 513, 603, 706, 707, 708, 709, 922, 923, 924, 925, 942, 943, 944, 945).