| 摘要 |
A vehicle adaptive cruise control (ACC) system 190 is operable to control the vehicle so as to maintain a cruise headway, by determining an appropriate headway H1, in dependence upon braking distance data for the current vehicle speed and for environmental and/or situational status of the vehicle. Environmental status may include data from at least one of: the windscreen wipers, rain sensors, head lights, fog lights, ambient temperature sensors and/or terrain data. Situational status may include data from at least one of: tyre pressure sensors, sports/winter mode activation, HID light level, brake bias status, lateral acceleration sensor and/or yaw rate sensor. The determined appropriate headway is then preferably displayed to the driver for a predetermined period/number of times, prompting the driver to select the indicated headway as the vehicle cruise headway. The level of surface friction, mu, may also be estimated. |
