DETERMINING A SPATIOTEMPORAL IMPACT OF A PLANNED EVENT ON TRAFFIC
First Claim
1. A traffic monitoring system comprising:
- a plurality of sensors to generate traffic data representing traffic flow at respective geographical locations; and
a system control comprising;
a sensor interface to receive information from the plurality of sensors;
a database to store historical data from the plurality of sensors and information about a planned event having a known start time, an expected end time, and a venue; and
an event analysis component to determine a spatiotemporal region, defined as a set of paired sensor and time values, in which traffic is affected by the planned event, a given paired sensor value and time value belonging to the set if, at the time represented by the time value, the sensor detects a delay at its associated location and is part of a continuous series of sensors, including a sensor associated with the venue, in which each sensor is detecting a delay.
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Accused Products
Abstract
Systems and methods are provided for determining an impact of a planned event. Traffic flow velocity is measured at each of a plurality of traffic sensors over a period of time before the planned event, with each traffic sensor having an associated geographical location. A plurality of measured traffic flow velocities for each traffic sensor are stored on a non-transitory computer readable medium. A traffic flow velocity at each traffic sensor is measured at each of a plurality of representative times within a defined time period including a known start time and an expected end time of the event. A threshold velocity is calculated from the stored traffic flow velocities for each traffic sensor corresponding to each representative time. For each representative time, a set of traffic sensors is determined at which the measured traffic flow velocity during the defined time period is less than the threshold velocity.
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Citations
15 Claims
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1. A traffic monitoring system comprising:
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a plurality of sensors to generate traffic data representing traffic flow at respective geographical locations; and a system control comprising; a sensor interface to receive information from the plurality of sensors; a database to store historical data from the plurality of sensors and information about a planned event having a known start time, an expected end time, and a venue; and an event analysis component to determine a spatiotemporal region, defined as a set of paired sensor and time values, in which traffic is affected by the planned event, a given paired sensor value and time value belonging to the set if, at the time represented by the time value, the sensor detects a delay at its associated location and is part of a continuous series of sensors, including a sensor associated with the venue, in which each sensor is detecting a delay. - View Dependent Claims (2, 3, 4, 5)
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6. A method to determine an impact of a planned event comprising:
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measuring traffic flow velocity at each of a plurality of traffic sensors over a period of time before the planned event, each traffic sensor having an associated geographical location; storing a plurality of measured traffic flow velocities for each traffic sensor on a non-transitory computer readable medium; measuring a traffic flow velocity at each traffic sensor at each of a plurality of representative times within a defined time period including a known start time and an expected end time of the planned event; calculating a threshold velocity from the stored traffic flow velocities for each traffic sensor corresponding to each of the plurality of representative times; and determining, for each of the plurality of representative times, a set of traffic sensors at which the measured traffic flow velocity during the defined time period is less than the threshold velocity. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A traffic monitoring system comprising:
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a plurality of sensors to generate traffic data representing traffic flow at respective geographical locations; and a system control comprising; a sensor interface to receive information from the plurality of sensors; a database to store historical data from the plurality of sensors and information about a planned event having a known start time, an expected end time, and a venue; and an event analysis component to determine a spatiotemporal region, defined as a set of paired sensor and time values, in which traffic is affected by the planned event, a given paired sensor value and time value belonging to the set if, at the time represented by the time value, the sensor detects a delay at its associated location and is part of a continuous series of sensors, including a sensor associated with the venue, in which each sensor is detecting a delay, by generating a directed acyclic graph representing a subset of the plurality of sensors within a threshold distance of the venue and searching the directed acyclic graph at each of a plurality of times within a defined time period encompassing a predetermined period of time before the known start time of the planned event, an expected duration of the planned event, and a predetermined period after the expected end time of the planned event to determine the spatiotemporal region.
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Specification