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公开(公告)号：US12142142B2
公开(公告)日：2024-11-12
申请号：US17448909
申请日：2021-09-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Richard Gordon , Donald K Grimm
Abstract: A method for determining a risk boundary in response to the plurality of indications of hard braking events wherein the risk boundary is indicative of a plurality of speed flow pairs at which a risk of a hard braking event is below a threshold value, determining, at a road segment level, a set of speed flow pairs of average speed and vehicle count and a plurality of indications of hard braking events, determining a host vehicle speed, and performing at least one of reducing the host vehicle speed and increasing a host vehicle following distance in response to the host vehicle speed exceeding the risk boundary for the vehicle flow density.
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公开(公告)号：US20240294174A1
公开(公告)日：2024-09-05
申请号：US18177322
申请日：2023-03-02
Applicant: GM Global Technology Operations LLC
Inventor： Richard Gordon , Donald K. Grimm
IPC: B60W40/109 , B60W40/105
CPC classification number: B60W40/109 , B60W40/105 , B60W2552/30
Abstract: A method for assessing lateral acceleration includes receiving vehicle telemetry data. The vehicle telemetry data includes a plurality of geographical positions along the curved trajectory traveled by the vehicle, the heading of the vehicle at each of the plurality of geographical, and the velocity of the vehicle at each of the plurality of geographical positions. The method further includes determining a curve radius of the curve trajectory traveled by the vehicle using the vehicle telemetry data and determining a lateral acceleration of the vehicle at each of the plurality of geographical positions along the curve trajectory The method further includes converting the lateral acceleration of the vehicle at each of the plurality of geographical positions along the curve trajectory traveled by the vehicle into a g-force.
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公开(公告)号：US20230186450A1
公开(公告)日：2023-06-15
申请号：US17547580
申请日：2021-12-10
Applicant: GM Global Technology Operations LLC
Inventor： Fahim Ahmed , Richard Gordon , Donald K. Grimm
IPC: G06T7/00 , G06V20/56 , G06V10/36 , G06T7/90 , G06K9/62 , G06V10/56 , G06V10/762 , G06V10/88 , G06T7/70
CPC classification number: G06T7/0002 , G06V20/588 , G06V10/36 , G06T7/90 , G06K9/6218 , G06V10/56 , G06V10/762 , G06V10/88 , G06T7/70 , G06K9/6215 , G06T2207/10024 , G06T2207/30256 , G06T2207/30168
Abstract: A system for quantitively determining quality for pavement markings disposed along pavement on a roadway includes one or more controllers in wireless communication with a plurality of vehicles. The one or more controllers receive image data represents the pavement markings disposed along the pavement collected by the plurality of vehicles. The one or more controllers execute instructions to determine at least one of a color distance measurement between a mean color space value of the pavement markings and an ideal marking color space value and a marking intensity contrast ratio between the pavement markings and the pavement.
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公开(公告)号：US20220366782A1
公开(公告)日：2022-11-17
申请号：US17322270
申请日：2021-05-17
Applicant: GM Global Technology Operations LLC
Inventor： Donald K. Grimm , Richard Gordon , Chuan Li , Shu Chen , Fan Bai
IPC: G08G1/01
Abstract: A system, method and server for a controlling a relation between a vehicle and traffic flow over a road segment. The system includes a telemetric device of the vehicle and a processor of the server. The telemetric device obtains telemetric data related to the road segment being traversed by the vehicle. The processor determines a property of the road segment based on the telemetric data and a road profile for the road segment, determines a disruption score indicative of a level of disruption in the traffic flow for the road segment based on the property, and outputs a notification signal when the disruption score is above a selected disruption threshold. The notification signal is usable for controlling the relation between the vehicle and the traffic flow.
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