System, methods, and other embodiments described herein relate to sensing ingress of water in a vehicle. In one embodiment, a method includes acquiring, from a radar of a vehicle, radar data about a passenger cabin of the vehicle. The method includes determining a current state of the passenger cabin according to the radar data. The method includes, responsive to identifying that the current state indicates an ingress of water into the passenger cabin, generating a response to the ingress of the water.

A protective system is provided including an airbag system for protecting a body part of a user in case of an accident, including a control unit and a communication interface. The protective system further includes an external device having a communication interface. The communication interface of the airbag system is configured to communicate with the external device using wireless communication.

A radar-based occupancy detection system that includes a seatbelt buckle disposed adjacent a seat of a vehicle and a radar module disposed within the seatbelt buckle, the radar module including an antenna, a radio frequency (RF) transmitter, a RF receiver, and a processor, the antenna configured to broadcast a RF signal generated by the RF transmitter toward the seat, the processor configured to derive signal information from output received from the receiver and to characterize occupancy of the seat based on the signal information.

A wireless airbag control system includes a central master electronic control module having an RF transceiver. One or more slave nodes are provided, each slave node being associated with an airbag that is mounted to perform an operating function with respect to a mechanical device. Each slave node further includes an RF transceiver, a central processing unit and a CAN controller. Two-way communication is shared between the slave nodes and the master electronic control module on a prioritized message basis.

Methods and systems are provided for transmitting video data associated with a vehicle. In one exemplary embodiment, a vehicle processor determines a vehicle safety event based on one or more safety sensors, activates one or more vehicle cameras that capture video data in response to the determined vehicle safety event, records the video data in a vehicle data storage device, and, if the vehicle processor determines that a suitable connection to a telecommunications network is available when the video data is being captured, then transmits the video data over the telecommunications network in substantially real time.

A position estimation unit (2) comprising a first transceiver device (3) and a processing unit (10) that is arranged to repeatedly calculate time-of-flight (TOF) for radio signals (x.sub.1, x.sub.2, x.sub.3, x.sub.4, x.sub.5, x.sub.6) sent pair-wise between two transceivers among the first transceiver device (3) and at least two other transceiver devices (7, 8, 9); calculate possible positions for the transceiver devices (3, 7, 8, 9), which results in possible positions for each transceiver device (3, 7, 8, 9); and perform Multidimensional scaling (MDS) calculation in order to obtain relative positions of the transceiver devices (3, 7, 8, 9) in a present coordinate system. After two initial MDS calculations, between every two consecutive MDS calculations, the processing unit (10) is arranged to repeatedly perform a processing procedure comprising translation, scaling and rotation of present coordinate system such that a corrected present coordinate system is acquired. The processing procedure is arranged to determine the corrected present coordinate system such that a smallest change for the relative positions of the transceiver devices (3, 7, 8, 9) between the consecutive MDS calculations is obtained.

A method for testing the functional capability of an emergency call device of a transportation vehicle. In an emergency mode, at least one specific audio signal is generated for a vehicle passenger by the emergency call device and emitted to the interior of the transportation vehicle. For testing, the emergency call device is put into a testing mode in which the at least one audio signal intended for the emergency is generated and wherein, in the testing mode, the generated audio signal passes, within the vehicle-internal emergency call device, through a signal path which is modified compared with the emergency mode.

A method of providing road and vehicle diagnostics. The method includes providing a vehicle axle system having a first axle half shaft housing, a second axle half shaft housing and a differential housing. Attached one or more of said housings is one or more tri-axis accelerometers. In communication with the accelerometers is one or more data processors operably configured to receive and analyze data from the accelerometers. An occurrence of one or more road events is determined by one or more spikes in the Z-direction of said data collected from said accelerometers. A depth of the road event is determined by a magnitude of said positive and negative changes in acceleration of said spike in said Z-direction and a length of road event is determined by a span of said one or more spikes in said Z-direction. Once the road event is identified the time and geographic location of the road event is identified.

Among other things, a documentation of a crash involving a vehicle is generated automatically. Telematics data is received that has been produced by one or more sensors associated with a telematics device at the vehicle. Based on the telematics data, a vehicle crash period is determined that begins at a start time and ends at an end time of the vehicle crash. Based on the telematics data, one or more metrics are determined associated with the vehicle during the vehicle crash period. Based on one or more metrics, a human-readable documentation of the vehicle crash is generated automatically.

An apparatus comprising a transceiver, an antenna and a processor. The transceiver may be configured to send/receive data messages to/from a plurality of vehicles. The antenna may be configured to receive signals from GNSS satellites. The processor may be configured to (i) determine a first region based on relative coordinates calculated using the data messages, (ii) determine a second region calculated using the signals received from the GNSS satellites, (iii) determine whether a pre-determined amount of the first region to the second region overlap and (iv) increase a confidence level of a positional accuracy of the plurality of vehicles if the pre-determined amount of the first region and the second region overlap. One of the vehicles implements one or more automatic responses based on the confidence level of the positional accuracy.