System for signalized intersection control

A traffic signal interconnect system in which a plurality of local controller means provide control of normal signal display cycles and include coordination means to provide signal cycle program and maintain cycle time reference with other similar local controller means, said coordination means comprised of:

• A. standard broadcast time receiving means,
• B. internal time means to record and advance the time of year independently from said broadcast time receiving means,
• C. broadcast time data check means to assure validity of data from said broadcast time receiving means,
• D. time correction means to update data of said internal time means with data of said broadcast time receiver means after input of said broadcast time data check means,
• E. programmable cycle means to input data for a plurality of cycle lengths,
• F. a plurality of cycle input means to externally select a cycle length from data of said programmable cycle means,
• G. cycle counter means to record and advance time of cycle independently from said internal time means with cycle duration based on data of said cycle input means,
• H. cycle correction means to relate data of said cycle counter means to data of said internal time means,
• I. programmable offset means to input data for a plurality of offsets,
• J. a plurality of offset input means to externally select an offset from data of said programmable offset means and advance data of said cycle counter means by data of said programmable offset means.