System for using cellular phones as traffic probes
First Claim
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1. A method of determining the flow of traffic on a monitored route segment comprising:
- obtaining and storing location information for a plurality of global positioning system enabled cellular traffic probes;
determining the speed of each of the plurality of probes based on the stored location;
selecting a subset of the plurality of probes corresponding to probes having a location in the monitored route segment; and
determining the traffic flow for the monitored route segment on the basis of the determined speed of the probes in the selected subset.
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Abstract
A system and method for determining the flow of traffic in a monitored route segment using global positioning system, or assisted global positioning system, enabled cellular phones as traffic probes takes advantage of the existing cellular infrastructure to deploy traffic probes to determine the flow of traffic based on the speed and direction of probes. Filtering of probe data can be used to remove probes having outlying results such as excessive speed, or probec that do not fit the general trend already observed on a traffic route segment.
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Citations
20 Claims
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1. A method of determining the flow of traffic on a monitored route segment comprising:
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obtaining and storing location information for a plurality of global positioning system enabled cellular traffic probes;
determining the speed of each of the plurality of probes based on the stored location;
selecting a subset of the plurality of probes corresponding to probes having a location in the monitored route segment; and
determining the traffic flow for the monitored route segment on the basis of the determined speed of the probes in the selected subset. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for monitoring and determining the flow of traffic on a monitored route segment, the system comprising:
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a location fetcher for obtaining and storing location information for a plurality of global positioning system enabled cellular traffic probes;
a location processor for determining the speed of each of the plurality of probes; and
a mapping engine for selecting a subset of the plurality of probes corresponding to probes having a location in the monitored route segment and for determining a traffic flow rating on the basis of the determined speed of the probes in the selected subset. - View Dependent Claims (18, 19, 20)
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Specification