A system for optimizing a machine learning model. a machine learning model that generates predictions based on at least one input feature vector, each input feature vector having one or more vector values; and an optimization module with a processor and an associated memory, the optimization module being configured to: create at least one slice of the predictions based on at least one vector value, determine at least one optimization metric of the slice that is based on at least a total number of predictions for the vector value, and optimize the machine learning model based on the optimization metric.

A hydraulic system that activates and operates a built-in jack system to enable a driver to change their tires without needing to set up a manual jack system, especially in inclement weather or in a poorly known location. The system is made up of four hydraulic jacks located closely to each tire. A hydraulic pump activated and operated from a control panel will enable one or more of the jacks to actuate due to the hydraulic fluid, lifting the vehicle off of the ground high enough to change a tire.

A hydraulic system that activates and operates a built-in jack system to enable a driver to change their tires without needing to set up a manual jack system, especially in inclement weather or in a poorly known location. The system is made up of four hydraulic jacks located closely to each tire. A hydraulic pump activated and operated from a control panel will enable one or more of the jacks to actuate due to the hydraulic fluid, lifting the vehicle off of the ground high enough to change a tire.

The equipment trailer has an A-frame on the front end thereof; a hitch on a forward end of that A-frame and a mechanical landing gear on a back end of the A-frame. This equipment trailer also has a pneumatic landing gear mounted to the A-frame between the hitch and the mechanical landing gear. The mechanical landing gear is operable for hitching and unhitching the equipment trailer to and from the truck at overnight parking locations, and the pneumatic landing gear is operable for hitching and unhitching the equipment trailer to and from the truck at job site locations.

The equipment trailer has an A-frame on the front end thereof; a hitch on a forward end of that A-frame and a mechanical landing gear on a back end of the A-frame. This equipment trailer also has a pneumatic landing gear mounted to the A-frame between the hitch and the mechanical landing gear. The mechanical landing gear is operable for hitching and unhitching the equipment trailer to and from the truck at overnight parking locations, and the pneumatic landing gear is operable for hitching and unhitching the equipment trailer to and from the truck at job site locations.

A semi-trailer including an elongated trailer frame having a front portion and a rear portion, a wheel bogie disposed beneath the trailer frame, a jack disposed proximal the rear portion of the trailer frame, where the jack is configured to raise and lower the rear portion of the trailer frame, The jack includes an actuator connected to the trailer frame at the rear portion, a plurality of pivotal support arms connected to an end of the actuator and a plurality of ground engaging members connected to the end of the plurality of support arms, where the ground engaging members are powered to transversely move the rear portion of the trailer frame.

A semi-trailer including an elongated trailer frame having a front portion and a rear portion, a wheel bogie disposed beneath the trailer frame, a jack disposed proximal the rear portion of the trailer frame, where the jack is configured to raise and lower the rear portion of the trailer frame, The jack includes an actuator connected to the trailer frame at the rear portion, a plurality of pivotal support arms connected to an end of the actuator and a plurality of ground engaging members connected to the end of the plurality of support arms, where the ground engaging members are powered to transversely move the rear portion of the trailer frame.

One embodiment of an outrigger footpad retainer system is described and depicted. The system may include a spider assembly that has an upper unit and a lower unit. The upper unit may have a retainer portion and two legs extending from the portion. The lower unit may have a retainer portion and two legs extending from the portion. The upper portion may at least partially overlap the lower portion.

An integrated vehicle jacking assembly includes a plurality of jacks that is each coupled to a bottom side of a vehicle. Each of the jacks is actuatable into an extended position for lifting a respective driver's side or passenger's side of the vehicle upwardly thereby facilitating tires on the respective driver's side or passenger's side of the vehicle to be removed and replaced. A control unit is positioned within the vehicle and the control unit is operationally coupled to each of the jacks. The control unit actuates one or both of the jacks between the extended position and the retracted position. A plurality of wheel chocks is provided for inhibiting the vehicle from rolling when the vehicle is lifted.

A hydraulic system that activates and operates a built-in jack system to enable a driver to change their tires without needing to set up a manual jack system, especially in inclement weather or in a poorly known location. The system is made up of four hydraulic jacks located closely to each tire. A hydraulic pump activated and operated from a control panel will enable one or more of the jacks to actuate due to the hydraulic fluid, lifting the vehicle off of the ground high enough to change a tire.