Abstract: A vehicle has a traffic light preemption system with a GPS receiver and an Inertial Measurement Unit (IMU). A processor is configured to log GPS data in correlation with IMU data, and to detect and map road surface defects. The processor may be configured to identify and report unmapped roads, and to correlate the road surface defects with traffic load, road construction type, and/or environmental factors. The processor may also be configured to detect and monitor changes in the IMU data associated with a given road surface defect, and/or road surface changes precursor to the development of road surface defects. The processor may be further configured to correlate the effectiveness of repairs to road surface defects with traffic load, road construction type, repair type, repairing entity, and/or environmental factors.

Abstract: A method of avoiding collisions and preempting traffic signals, including the steps of predicting a first likely travel route of a first vehicle along established roadways; predicting a second likely travel route of a second vehicle along the established roadways; preempting a normal operation of at least one traffic signal at an intersection of roadways along at least one of the first likely travel route and the second likely travel route allowing at least one of the first vehicle and the second vehicle to traverse the intersection; and determining whether both the first vehicle and the second vehicle will be at the intersection within a predefined time interval of each other.

Abstract: A traffic preemption system including at least one identification device for an identification of a vehicle and/or a driver of the vehicle; a historical travel database including records of previously taken routes by the vehicle or the driver; and a traffic signal preemption device. The traffic signal preemption device is configured to preempt a normal action of traffic signals dependent upon the identification of the vehicle and/or the identification of the driver by the identification device and the previously taken routes by the vehicle and/or the driver as determined by the historical travel database.

Abstract: A method of avoiding collisions and preempting traffic signals, including the steps of predicting a first likely travel route of a first vehicle along established roadways; predicting a second likely travel route of a second vehicle along the established roadways; preempting a normal operation of at least one traffic signal at an intersection of roadways along at least one of the first likely travel route and the second likely travel route allowing at least one of the first vehicle and the second vehicle to traverse the intersection; and determining whether both the first vehicle and the second vehicle will be at the intersection within a predefined time interval of each other.