Smart traffic signal system
First Claim
Patent Images
1. A method comprising:
- broadcasting traffic signal data identifying present and future traffic signal sequences for a traffic signal;
receiving said traffic signal datad at a vehicle;
calculating, based on said received traffic signal data, a speed range to be followed by said vehicle to minimize the amount of stopping, starting, and/or speed changing required while enabling the vehicle to progress past the traffic signal; and
displaying said calculated speed range to occupants of said vehicle.
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Abstract
Traffic signal data is broadcast, for receipt by vehicles traversing the roadways controlled by the traffic signals. If desired, traffic lights are provided with the capability to broadcast their location, status, changing cycles and timing data continuously. A receiving system in a vehicle is configured to receive the traffic signal data and display, to a user of the vehicle, visual display information and/or audible information informing the user of a speed range which, if followed, optimizes the use of the highway and minimizes the number of starts and stops that must be made.
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Citations
24 Claims
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1. A method comprising:
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broadcasting traffic signal data identifying present and future traffic signal sequences for a traffic signal;
receiving said traffic signal datad at a vehicle;
calculating, based on said received traffic signal data, a speed range to be followed by said vehicle to minimize the amount of stopping, starting, and/or speed changing required while enabling the vehicle to progress past the traffic signal; and
displaying said calculated speed range to occupants of said vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system comprising:
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a transmitter broadcasting traffic signal data identifying present and future traffic signal sequences for a traffic signal;
a receiver receiving said traffic signal data at a vehicle;
a processor calculating, based on said received traffic signal data, a speed range to be followed by said vehicle to minimize the amount of stopping, starting, and/or speed changing required while enabling the vehicle to progress past the traffic signal; and
a display device displaying said calculated speed range to occupants of said vehicle. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A computer program product comprising a computer readable storage medium having computer readable program code embodied in the medium, the computer readable program code comprising instructions effective when executing to:
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broadcast traffic signal data identifying present and future traffic signal sequences for a traffic signal;
receive said traffic signal data at a vehicle;
calculate, based on said received traffic signal data, a speed range to be followed by said vehicle to minimize the amount of stopping, starting, and/or speed changing required while enabling the vehicle to progress past the traffic signal; and
display said calculated speed range to occupants of said vehicle. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification