A vehicle comprises a control system. The control system is connectable to a trailer and includes a trailer connection checking mode in which the control system actuates trailer lights of the trailer in a predetermined sequence. The control system makes a trailer presence determination of whether the trailer is connected to the control system. According to the trailer presence determination, the control system performs the trailer connection checking mode.

A trailer includes: a chassis; a floating coupling apparatus coupled to the chassis, a portion of the floating coupling apparatus configured to move in a vertical direction relative to the chassis; a kingpin attached to the floating coupling apparatus; a displacement-sensing device positioned between an attachment portion on the chassis and an attachment portion on the floating coupling apparatus, the displacement-sensing device configured to sense a load acting on the displacement-sensing device; and a fluid system in fluid communication with the displacement-sensing device.

A base rail of a trailer includes an upper portion configured to be coupled to the inner surface of a sidewall of a trailer. The upper portion includes a plurality of spaced-apart ridges configured to extend inwardly away from an inner surface of the upper portion and into a storage area of the trailer. The base rail also includes a lower portion configured to be coupled to the floor assembly of the trailer, and a bumper guard coupled to the inner surface of the upper portion and positioned between spaced-apart ridges.

A base rail of a trailer includes an upper portion configured to be coupled to the inner surface of a sidewall of a trailer. The upper portion includes a plurality of spaced-apart ridges configured to extend inwardly away from an inner surface of the upper portion and into a storage area of the trailer. The base rail also includes a lower portion configured to be coupled to the floor assembly of the trailer, and a bumper guard coupled to the inner surface of the upper portion and positioned between spaced-apart ridges.

A braking control system for a trailer includes a braking system on a semi-trailer with the brake application handle located at the inside rear of the trailer. The handle has a locking member so that personnel loading the trailer are able to apply and lock the brakes on the trailer, and only the person(s) holding the key are able to release the brakes. The system prevents the trailer from moving away from the dock plate and having the dock plate fall through the space between the moved trailer and the dock, injuring personnel and/or damaging equipment.

A braking control system for a trailer includes a braking system on a semi-trailer with the brake application handle located at the inside rear of the trailer. The handle has a locking member so that personnel loading the trailer are able to apply and lock the brakes on the trailer, and only the person(s) holding the key are able to release the brakes. The system prevents the trailer from moving away from the dock plate and having the dock plate fall through the space between the moved trailer and the dock, injuring personnel and/or damaging equipment.

A luggage device for a vehicle includes a container including a door that is openable and closable, a first mounting portion facing the door, and a second mounting portion configured to connect the door to the first mounting portion, the container having a fillable space formed therein, and a drive mechanism configured to connect the container to a mount subject such that the first mounting portion or the second mounting portion is attached to the mount subject and to switch mount directions of the container.

A luggage device for a vehicle includes a container including a door that is openable and closable, a first mounting portion facing the door, and a second mounting portion configured to connect the door to the first mounting portion, the container having a fillable space formed therein, and a drive mechanism configured to connect the container to a mount subject such that the first mounting portion or the second mounting portion is attached to the mount subject and to switch mount directions of the container.

A rack for mounting solar panels on a vehicle includes a framework that couples to and support the solar panels. The framework has opposite first and second sides and a width therebetween. A first framework support attaches to the vehicle. The first framework support includes a first framework connector that couples to the first side of the framework. A second framework support attaches to the vehicle at a location spaced apart from the first framework support. The second framework support couples to the second side of the framework. The first framework connector defines a first plurality of different coupling locations for the first side of the framework to couple to in order to accommodate the width of the framework when the first and second framework supports are attached to the vehicle.

A rack for mounting solar panels on a vehicle includes a framework that couples to and support the solar panels. The framework has opposite first and second sides and a width therebetween. A first framework support attaches to the vehicle. The first framework support includes a first framework connector that couples to the first side of the framework. A second framework support attaches to the vehicle at a location spaced apart from the first framework support. The second framework support couples to the second side of the framework. The first framework connector defines a first plurality of different coupling locations for the first side of the framework to couple to in order to accommodate the width of the framework when the first and second framework supports are attached to the vehicle.