The invention relates to a crossing
traffic signal control system which comprises a vehicle flow rate statistic analysis module, a traffic control
preemption decision module and a crossing
signal lamp module which are connected sequentially. The invention also relates to a crossing
traffic signal control method utilizing the
system. According to the control method, based on a
clock phase, the traffic control
preemption decision module controls the crossing
signal lamp module, when phase execution is finished, if the traffic control
preemption decision module determines that a phase
green light time of a phase is longer than a preset
phase time, the phase is executed first to realize preempt control based on the
clock phase, then the
clock phase is executed according to a preset sequence, thus a phase of a high vehicle flow rate is released preferentially, city traffic pressure is effectively alleviated, and a traffic pass efficiency of a city is raised. The
system and the method in the invention have the advantages of a simple
system structure, low cost of method realization, and a wide application range.