Traffic control method and apparatus

Details Traffic control method and apparatus Traffic control method and apparatus

2001-08-16

2009-06-23

Pope, Daryl C (Department: 2612)

Communications: electrical

Traffic control indicator

C340S906000, C340S924000, C340S925000, C701S117000, C701S118000

Reexamination Certificate

active

07551104

ABSTRACT:
A method called as a time-differential-ratio method and its apparatus used for intersection traffic control that differentially operates on the traffic so as to change pass-permit direction with traffic status in time is disclosed. The method includes the steps of starting, timing, vehicle-requesting, extra-moving, ratio-moving, and recycling. Unlike a common control method called as macro-estimate control method that forces changeable traffic to follow a given period and direction turn order to pass, which causes lots of stops and wait, a differential operations on the traffic are integrated with a common ratio control method and walker signals. It shows the operating features and the effective characteristic of both micro-time control and macro ratio control, which lets a vehicle arriving first pass first conditionally, is good for real-time arbitrary traffic pattern control, and leads to great reduction of stops and wait. The apparatus needed for the method includes sensing/detecting apparatuses and processing apparatus.

REFERENCES:
patent: 2705789 (1955-04-01), Barker
patent: 6317058 (2001-11-01), Lemelson et al.

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