Abstract: A vehicle includes a frame and a debris hopper including a door disposed along a side of the vehicle. The vehicle also includes front and rear lift assemblies supporting the debris hopper on the frame and configured to lift and tilt the debris hopper relative to the frame. Each lift assembly includes a transverse support mounted across the frame. A lift arm including a first end and an opposite second end, with the first end of the lift arm pivotably coupled to one end of the transverse support. A leg extending below the debris hopper and disposed proximate the door, with the second end of the lift arm pivotably coupled to one end of the leg opposite of the debris hopper. A first fluid actuator extending between the transverse support and the lift arm, and a second fluid actuator extending between the lift arm and the leg.

Abstract: A removable cover to protect a connector between two conduits includes a single body having a wall surrounding an interior volume. The body has a neck sized to grip a portion of a first of the conduits. The body has a size-adjustable section to permit the body to be shortened or lengthened. The body has a casing section. The casing section protects a coupling connecting together the two conduits.

Abstract: A boom hose apparatus for a material collection vehicle includes a telescoping boom assembly and a hose assembly supported by the boom assembly. The boom assembly includes a plurality of telescoping conduits. A flexible hose is received through the telescoping conduits and can slidably extend from, or retract into, the conduits independently from the telescoping of the conduits.

Abstract: An example emergency vehicle siren system can include: one or more emergency lights; a siren; and a controller including a processor and memory, the memory encoding instructions which, when executed by the processor, cause the controller to modify a sound of the siren based upon a context of the vehicle, the context including at least one of a speed and location of the vehicle.

Abstract: Lighting unit that can be mounted to a vehicle for illuminating work or emergency areas at night. The lighting unit includes a mechanically controllable driver for selecting a position of a central optical axis of the light emitter and an electronically adjustable refractive element for modulating a beam spread configuration generated by the lighting unit.

Abstract: A power split and creep drive system for street sweeper or like specialty vehicle having a single engine is disclosed. The system intends to retrofit and convert on-highway truck chassis into specialty vehicles capable of performing work function and moving at creeping speed, such as a street sweeper. It includes a hydraulic work circuit or power-take-off (PTO) port, a planetary gear set, a hydraulic system comprising pumps and motors to drive the working devices and balance the demand between propulsion and work function such as sweeping. The planetary gear set includes an input shaft connecting to a transmission output shaft of the chassis, a first output shaft connecting to a hydraulic machine, and a second output shaft to vehicle propulsion drive shaft.

Abstract: An example speaker for providing alerts includes: a housing and a cover forming an integrated unit; a microphone configured to sense an ambient noise level; and a processor configured to adjust a volume of the speaker based upon the ambient noise level. A hinge can be positioned between the housing and the cover to allow the cover to be pivoted relative to the housing from a close position to an open position.

Abstract: Peripheral lighting system for an emergency vehicle. In an example, the lighting system has a plurality of light heads configured to be located at various positions on the emergency vehicle. A system controller is programmed to individually control each of the light heads via each a plurality of serial communications lines from the controller to the light heads.

Abstract: Lighting systems for emergency vehicles. The lighting systems adjust light emission characteristics of lighting devices of the vehicle based on one or more detected conditions in the vicinity of the vehicle. The conditions are detected in different zones around the vehicle. The lighting system is configured to adjust characteristics of the lighting devices based on the zone in which the condition is detected.

Abstract: A vehicle includes at least one hose extending from the vehicle and configured to extend below ground through a manhole, and a light system. The light system includes a storage member, such as a retractable reel, coupled to the vehicle, a flexible line wrapped at least partially around the storage member, and a light source coupled to the flexible line. The storage member is adapted to selectively extend and retract the light source together with the hose below ground, and the light source is storable on the vehicle adjacent the storage member. The light source has a self-contained power source. In some systems, the flexible line and/or the light source are removable from the vehicle so they can be moved to a remote location from the vehicle.

Abstract: A warning device. In some embodiments, the warning device can include: a plurality of light sources forming an array; a plurality of reflectors, with at least one reflector being associated with each of the plurality of lights; and a plurality of lenses, with at least one lens being associated with each of the plurality of lights. In some examples, each of the plurality of reflectors and the plurality of lenses is tilted along a principal axis to collimate light and to direct the light from one of the plurality of lights to one of a plurality of far field light spots.

Abstract: Light bars, and lighting systems and vehicles that include light bars. The light bars include a plurality of light emitting modules coupled together at flexible joints to allow a single light bar to be affixed to surfaces of varying curvatures, such as an interior window surface of a vehicle. The size of the light bar is easily customizable due to its modular nature. In some examples, a controller or other electronic element is adapted to detect a number and/or configuration of modules in a given light bar.

Abstract: An example warning device can include: a plurality of light sources forming an array; a plurality of reflectors, with at least one reflector being associated with each of the plurality of lights; at least one lens for each of the plurality of lights; and an optical prism plate that directs light from one or more of the plurality of lights to one of a plurality of far field light spots.

Abstract: A power split and creep drive system for street sweeper or like specialty vehicle having a single engine is disclosed. The system intends to retrofit and convert on-highway truck chassis into specialty vehicles capable of performing work function and moving at creeping speed, such as a street sweeper. It includes a hydraulic work circuit or power-take-off (PTO) port, a planetary gear set, a hydraulic system comprising pumps and motors to drive the working devices and balance the demand between propulsion and work function such as sweeping. The planetary gear set includes an input shaft connecting to a transmission output shaft of the chassis, a first output shaft connecting to a hydraulic machine, and a second output shaft to vehicle propulsion drive shaft.

Abstract: Light beacons and light beacon systems including a lens or housing configured to collimate light emitted from two discrete optical focal points positioned along a central longitudinal axis of the beacon. The example lens can be, e.g., cylindrical or frusto-conical, and an outer surface of the lens defines at least a first region that is optically tuned to a first of the optical focal points, a second region that is optically tuned to a second of the optical focal points, and a third region that is optically tuned to both focal points.

Abstract: A system for object detection within a monitored zone around a vehicle includes: at least one processor; and memory encoding instructions which, when executed by the processor, cause the system to: detect an object; and suppress an alert associated with detection of the object when a size of the detected object is below a lower size threshold value or above an upper size threshold value.