A system and method for classifying an actuation of an electric parking brake of a vehicle. In one example, the system includes a sensor configured to sense a vehicle parameter, an output device, a data store including an electric parking brake usage profile, and an electronic controller configured to receive the electric parking brake usage profile, receive the vehicle parameter from the sensor, detect an actuation of the electric parking brake, and in response to detecting an actuation of the electric parking brake: determine a reason for the actuation of the electric parking brake, determine an attribute of the vehicle based on the vehicle parameter, classify the actuation of the electric parking brake based on at least one selected from the group consisting of a numerical value of the attribute and the reason for the actuation of the electric parking brake, update the electric parking brake usage profile based on the classification of the actuation of the electric parking brake, and output the updated parking brake usage profile to the output device.

In various examples, activation criteria and/or braking profiles corresponding to automatic emergency braking (AEB) systems and/or collision mitigation warning (CMW) systems may be determined using sensor data representative of an environment to a front, side, and/or rear of a vehicle. For example, activation criteria for triggering an AEB system and/or CMW system may be adjusted by leveraging the availability of additional information with regards to the surrounding environment of a vehicle—such as the presence of a trailing vehicle. In addition, the braking profile for the AEB activation may be adjusted based on information about the presence of and/or location of vehicles to the front, rear, and/or side of the vehicle. By adjusting the activation criteria and/or braking profiles of an AEB system, the potential for collisions with dynamic objects in the environment is reduced and the overall safety of the vehicle and its passengers is increased.

A brake temperature estimation apparatus for estimating the temperature of a vehicle brake is disclosed. The apparatus includes a memory which stores thermal behavior information relating the temperature of a brake of a braked wheel of the vehicle to the temperature of tire gas in the tire of the braked wheel, and a controller which is configured to: receive a first tire gas temperature value relating to the temperature of tire gas in the tire of the braked wheel at a given time; receive a second tire gas temperature value relating to the temperature of tire gas in a tire of a non-braked wheel of the vehicle at the given time; calculate a difference between the first tire gas temperature value and the second tire gas temperature value; and estimate a temperature of the brake of the braked wheel based on the calculated difference and the thermal behavior information.

An electronic braking system including a prime mover speed sensor structured to sense a prime mover speed, a vehicle speed sensor structured to sense a vehicle speed, one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to determine an overspeed condition based on the prime mover speed and the vehicle speed, generate a tuned overspeed value based on the overspeed condition, and generate a braking command based on the tuned overspeed value.

A system, method, and apparatus includes management of coasting during operation of a vehicle. Speed of a vehicle is monitored during a coasting event and is compared against a threshold to determine whether to remain coasting or re-engage an engine to a driveline. If instantaneous speed exceeds the threshold, predicted speed can be used to determine whether to permit short duration excursions, or to re-engage the engine to the driveline. These techniques can be used whether the vehicle is slowing down below a threshold or speeding up above a threshold.

Methods and systems for operating a vehicle on a reduced traction surface are disclosed. A controller of the vehicle obtains at least one of: ambient information or GPS information, determines a derate increment size based on the ambient or GPS information, imposes a sustained derate by applying a torque limit on a braking torque of the vehicle based on the derate increment size in response to detecting a traction control event. The controller also determines a verification period and a derate reduction period based on the ambient or GPS information to reduce the sustained derate in response to detecting a lack of traction control event during the verification period at a rate determined by the derate reduction period.

Methods and systems for operating a vehicle on a reduced traction surface are disclosed. A controller of the vehicle obtains at least one of: ambient information or GPS information, determines a derate increment size based on the ambient or GPS information, imposes a sustained derate by applying a torque limit on a braking torque of the vehicle based on the derate increment size in response to detecting a traction control event. The controller also determines a verification period and a derate reduction period based on the ambient or GPS information to reduce the sustained derate in response to detecting a lack of traction control event during the verification period at a rate determined by the derate reduction period.

An example operation includes one or more of determining, by sensors on a transport, a slope of a road and a surface condition of the road and engaging one or more wheels of the transport, based on the slope, the surface condition, and a characteristic of the one or more wheels. Engaging includes braking to the one or more wheels at a different rate as the transport is moving on the road.

An automatic braking system for a vehicle includes a sensor system configured to detect the previous speed of the vehicle, occupancy of a driver's seat of the vehicle, and an input to at least one of an accelerator pedal of the vehicle and a brake pedal of the vehicle. The automatic braking system also includes a control module communicatively connected to the sensor system and configured to automatically brake the vehicle when the vehicle was previously stopped, the driver's seat is occupied, and there is no input to the accelerator pedal or the brake pedal.

A system and method are provided for estimating and applying vehicle tire traction. Vehicle data (e.g., movement and location-based data) and tire sensor data are collected at a vehicle and transmitted to a remote computing system (e.g., cloud server). A wear status is determined, and traction characteristics determined for at least one tire, based at least on the vehicle data and the determined tire wear status. The predicted tire traction characteristics are transmitted from the remote computing system to an active safety unit associated with the vehicle, or a fleet management system, wherein the recipient is configured to modify vehicle operation settings based on at least the predicted tire traction characteristics. A maximum speed for the vehicle may be defined by the recipient, or a minimum following distance where, e.g., the vehicle is one of multiple vehicles in a defined platoon.