Herein disclosed is an apparatus mounted on a vehicle for assisting a vehicle driver in carefully driving. The apparatus comprises data obtaining means for obtaining vehicle movement data indicative of a movement of the vehicle, estimating means for estimating a current location of the vehicle on the...http://www.google.com.hk/patents/US6046671?utm_source=gb-gplus-share專利 US6046671 - Apparatus for assisting driver in carefully driving
