Adaptive traffic signal with adaptive countdown timers
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United States of America Patent
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Oct 25, 2022
Grant Date -
Oct 21, 2021
app pub date -
Sep 4, 2019
filing date -
Sep 4, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Traffic signals that adapt to traffic conditions are provided with countdown timers. These countdown timers count down from some number towards zero, and indicate the approximate duration remaining before a traffic signal changes state. Since the traffic signal is continuously adapting to traffic conditions, the exact time before a state change occurs is not known in advance. Using a countdown algorithm, the countdown timers imperceptibly modify the countdown sequence in real time so that the traffic signal state change coincides approximately with the moment the countdown reaches its minimum count.
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