When spreading aggregate material onto a layer of bitumen/wet bitumen, when forming a road surface, the aggregate is commonly spread from a truck in reverse, potentially causing accidents and injuries. Safety is improved by providing a spreading vehicle that can be driven in the direction in which it is spreading the aggregate material. This is achieved by providing a second driving cab and driver controls at a location that would normally be considered the rearward end of the vehicle. The second driver cab is above a conveyor system conveying aggregate material from a hopper of the vehicle to a spreader box. The second driver cab allows the vehicle to be driven in the direction it is spreading material, by a driver who is facing the direction of travel, and who can see if the vehicle is about to hit anything or run into a worker in the surrounding area.

A method includes receiving information indicative of a cold planer travel path extending along a work surface, determining a mobile machine travel path extending along the work surface based at least partly on the information indicative of the cold planer travel path, and receiving sensor information associated with the work surface, wherein the sensor information is determined by at least one sensor of an autonomous mobile machine as the autonomous mobile machine traverses the mobile machine travel path. The method also includes generating a worksite map based at least partly on the sensor information, the worksite map identifying an object, wherein the object is disposed at least partly beneath a cut area to be formed by a cold planer, and controlling a position of a rotor of the cold planer, relative to the work surface and based at least partly on a location of the object identified in the worksite map.

A controller may obtain initial sensing data to determine an estimated weight associated with each initial load of one or more initial loads of material carried by an implement. The controller may identify an estimated weigh accuracy metric associated with each initial load and an estimated weight accuracy metric associated with a final load to be carried by the implement. The controller may determine a target weight for the final load based on the estimated weights of the one or more initial loads, the estimated weight accuracy metrics of the one or more initial loads, or the estimated weight accuracy metric associated with the final load. The controller may obtain final sensing data to determine an estimated weight associated with the final load and may cause the implement to perform one or more actions based on the estimated weight of the final load and the target weight.

A method and system for detecting paving material segregation in a paving material supply chain includes at least a paving material plant, a paving material haul truck, and a paver machine. The method and system further includes receiving segregation information from a plurality of cameras located in the paving material supply chain and identifying a location of segregation formation in the supply chain based on the received segregation information.

When spreading aggregate material onto a layer of bitumen/wet bitumen, when forming a road surface, the aggregate is commonly spread from a truck in reverse, potentially causing accidents and injuries. Safety is improved by providing a spreading vehicle that can be driven in the direction in which it is spreading the aggregate material. This is achieved by providing a second driving cab and driver controls at a location that would normally be considered the rearward end of the vehicle. The second driver cab is above a conveyor system conveying aggregate material from a hopper of the vehicle to a spreader box. The second driver cab allows the vehicle to be driven in the direction it is spreading material, by a driver who is facing the direction of travel, and who can see if the vehicle is about to hit anything or run into a worker in the surrounding area.

A continuous asphalt mixture production plant based on double-horizontal-shaft forced mixing includes a cold aggregate bin, a continuous aggregate conveying and metering system, a drying drum, an aggregate elevator, a double-horizontal-shaft continuous mixing host, a continuous asphalt metering and conveying system, a continuous powder conveying and metering system and a finished product bin. The double-horizontal-shaft continuous mixing host includes a first double-horizontal-shaft mixing cylinder and a second double-horizontal-shaft mixing cylinder connected in series. The first double-horizontal-shaft mixing cylinder is provided with an aggregate inlet, an asphalt inlet, a powder inlet and a first discharging port, and the second double-horizontal-shaft mixing cylinder is provided with a mixture inlet and a second discharging port. The aggregate inlet, the asphalt inlet and the powder inlet are respectively connected with an outlet of the aggregate elevator, the continuous asphalt metering and conveying system and the continuous powder conveying and metering system correspondingly.

A new and improved method and apparatus for use in conjunction with the free floating paving screed used for road paving is disclosed. The method of forming a bituminous mixture into a smooth flat paved mat comprising some areas with a given nominal mat density and some selected areas with a predeterminedly higher mat density is described wherein problems posed by a reduced compaction ratio occurring subsequently to paving the mat where the roller drum bridges over recesses in the subbase are addressed. The modified paving screed described employs a new adjustable screed plate that allows localized areas of increased angle of attack and a device to increased material entry density in localized areas in front of a screed plate leading edge. Either method is used to create an increase in mat density in the desired area. The method and apparatus teach that by pairing differences in compaction ratio that inherently occur due to subbase irregularities with correspondingly predetermined and different mat densities in the paved mat, a good consistent final density can be achieved notwithstanding the limitations of the compaction rolling. A forward looking vision system is described that identifies subbase recesses, a digital controller quantifies the density increase required, and a GPS system maps locations where the mat density increases are to be applied.

A paving machine including a frame, a hopper assembly, and a control unit is disclosed. The control unit may be configured to determine a location of the paving machine, determine a heading and a travel speed of the paving machine, and generate a non-circular geofence corresponding to the paving machine. The non-circular geofence may have an anchor point that is disposed at the location of the paving machine, and may be positioned and oriented based on the heading and the travel speed of the paving machine. The control unit may be configured to determine a location of a supply machine relative to the paving machine, and determine a state of the supply machine based on a comparison between the location of the supply machine and the non-circular geofence. The control unit may be configured to cause an action to be performed based on the state of the supply machine.

A method of determining optimal frequency to load haul trucks can include a central controller receiving an indication of the amount of paving material at a paving machine, and an indication of production rate of the paving machine. The central controller can then determine when more paving material should be provided to the paving machine. Based on this determination, the central controller can provide alerts or triggers to a paving material plant to indicate when haul trucks should be loaded to provide additional paving materials to the paving machine.

A system for controlling the interface between a paving machine and material supply machine. The system includes a sensor or other means for sensing a distance between the paving machine and the material supply machine and a control system in operable communication with the sensor or other means for sensing and in operable communication with either or both of an operational system of the paving machine and an operational system of the material supply machine to take control of the acceleration or deceleration of either or both of the paving machine and material supply machine.