A radar-based system for communicating information to a vehicle uses spatially-encoded markers that are positioned proximate to a roadway traveled by the vehicle. The markers are designed to convey a unique radar signature that distinguishes the markers from other objects. The unique radar signature or marker characteristics are further interpreted by at least one controller on the vehicle as encoded messages. Marker distinguishing characteristics, such as size, shape, orientation and movement, provide distinct information to the controller. The controller may use the conveyed information to make control decisions for the vehicle or to display the conveyed information to occupants of the vehicle. In some cased, the controller may use the conveyed information to determine a location of the vehicle, such as a position of the vehicle within a lane.

A system includes a wireless transceiver and a processor. The processor is programmed to generate an alert message indicative of a roadway obstacle according to sensor data, send the alert message over vehicle-to-vehicle direct communications via the wireless transceiver, and send the alert message to a cellular tower via the wireless transceiver for local cellular broadcast responsive to topology data generated from the sensor data indicating line-of-sight communication is compromised.

A communication system for a vehicle, with a processor designed to determine a driving situation of the vehicle, and a communication interface designed to receive V2X communication data of a first additional vehicle, wherein the V2X communication data defines a driving situation of the first additional vehicle, wherein the processor is designed to detect a second additional vehicle which is located between the vehicle and the first additional vehicle on the basis of the determined driving situation of the vehicle and the driving situation of the first additional vehicle.

Provided is a method and system for determining a separation distance between a first object and a second object. It is envisaged that at least one of the objects is a movable vehicle such as a train. The method comprises using a search module associated with a first object where said search module comprises a first transponder having a unique address. The method includes using a reply module associated with a second object where said reply module comprises a second transponder having a different, unique address. The method includes the search module transmitting a search signal on a first frequency, said search signal including the address of the first transponder and the address of the second transponder. The reply module receives the search signal and locally validates the address included in said received search signal for the second transponder, whereby, if the validation is positive; the reply module transmits a reply signal on a second, different frequency, said reply signal including the address of the second transponder and the address of the first transponder. The search module receives the reply signal and locally validates the address included in said received reply signal for at least the second transponder whereby, if the validation is positive, the search module determines a separation distance between the first object and the second object based on a time taken from transmission of the search signal to receipt of the reply signal at said search module. The local validation of the address of the second transponder at the reply module and then at the search module improves reliability of processing of reply signals and allows the method to be implemented in a stand-alone configuration not reliant on signals from external systems.

A roadside detection system, a roadside unit and a roadside communication method are provided. The roadside unit receives a positioning signal from a satellite positioning system and obtains roadside latitude and longitude coordinates and an initialization parameter coordinate. The roadside unit receives object information of the object. The roadside unit obtains object latitude and longitude coordinates, an object speed, an object acceleration, an object length, and an object heading/direction based on the roadside latitude and longitude coordinates, the initialization parameter coordinate, and the object information. The roadside unit converts the object latitude and longitude coordinates, the object speed, the object acceleration, the object length, and the object heading/direction into a V2V Basic Safety Message format.

A vehicle positioning device, comprises a wireless communicator, at least one ultra-wideband transceiver and a signal processor. The ultra-wideband transceiver is disposed in a vehicle and configured to receive a pulse signal with source information from another ultra-wideband transceiver. The signal processor is connected to the at least one ultra-wideband transceiver and a speed measuring device of the vehicle, and configured to generate a position information according to the signal value of the pulse signal and the source information and transmit the position information and a vehicle speed information obtained from the speed measuring device through the wireless communicator to a server, and receive a driving information associated with the position information and the vehicle speed information from the server through the wireless communicator.

The present disclosure relates to a railway collision protection and safety system having a vehicle device located on rail vehicles at a work zone, a personal protection unit located with rail workers at the work zone, and a dispatcher processor at a control center. An authority limit within the work zone may be determined by the dispatcher processor, and an authority exceeded signal is sent to the rail vehicle when the rail vehicle is determined to exceed the authority limit.

A method is provided for transmitting data in a system for determining a location of at least one industrial truck comprising a mobile radio station and positioned in an area having a plurality of stationary radio stations. The method comprises transmitting a position-determining signal from the mobile radio station to the plurality of stationary radio stations. The position-determining signal is received and a position signal is transmitted from the plurality of stationary radio stations to the mobile radio station. Additional data is appended to at least one of the position-determining signal and the position signal and is evaluated. A current vehicle position is then determined from at least three received position signals.

A method, apparatus, and aircraft tracker system for reporting state information for an aircraft. A state of the aircraft is identified using sensor data received from an aircraft sensor system in the aircraft. The state information is transmitted at a reporting rate set using the state of the aircraft identified from the sensor data, at least one of a crew command or a ground command when at least one of the crew command is received from a crew interface or the ground command is received from a ground source, and a policy defining priorities for reporting that are based on at least one of the crew command, the ground command, or the state of the aircraft identified from the sensor data.

A method and apparatus is provided for controlling the operation of an autonomous vehicle. According to one aspect, the autonomous vehicle may track the trajectories of other vehicles on a road. Based on the other vehicle's trajectories, the autonomous vehicle may generate a pool of combined trajectories. Subsequently, the autonomous vehicle may select one of the combined trajectories as a representative trajectory. The representative trajectory may be used to change at least one of the speed or direction of the autonomous vehicle.