Abstract: A robotic work tool system (200) comprising a robotic work tool (100), said robotic work tool (100) comprising a position determining device (190) for determining a current position, such as through receiving satellite signals, and a navigation device (195) arranged to at least provide a compass heading, the robotic work tool (100) being configured to: determine a compass heading (CH) obtained through the navigation device (195); compare the compass heading to a true heading (TH) obtained through the position determining device (190); determine an error (e) between the true heading (TH) and the compass heading (CH); determine a robot position (XR; YR); and store the error (e) for said robot position (XR; YR) thereby generating a magnetic correction matrix.

Abstract: Traffic incident information may be clustered to determine geographical locations in which a statistically-increased level of traffic incidents occur. Indices indicative of vehicle operating conditions within the locations may be generated according to crowd-sourced event information factors and an index function including coefficients defining contributions of the factors to the indices. The coefficients may be optimized to minimize error between the index-predicted statistically-increased level areas and the clustered traffic incident information.

Abstract: A method and apparatus for detecting airbag deployment are provided. The method includes: detecting air pressure information corresponding to air pressure inside a vehicle cabin; determining whether a value corresponding to the air pressure information is greater than a predetermined value; and performing a function in response to determining that the value is greater than the predetermined value.

Abstract: A method for determining a response time of a brake of at least one assigned axis of a multi-axis machine includes actuating the axis, switching the brake, and determining a response time between a switching point in time and a response point in time at which a motion state of the axis changes. The method may further include opposing actuation of the axis while the brake is closed, and detecting a mechanical play between opposing maximum deflections of the axis. A method of operating or monitoring a multi-axis machine includes determining a response time and/or detecting mechanical play, and operating the machine or triggering a fault response based on the response time or mechanical play.