| 摘要 |
FIELD: transport.SUBSTANCE: invention relates to navigation systems to estimate driver's activity in driving motor vehicle. Motor vehicle comprises feedback batter indicator 18. Said indicator 18 comprises batter detection unit 19, driving measurement means 18, and means 21 to compute driving ability. Said means 21 compares driving activity with detected batter profile to generate estimate depending on how much driving activity complies with optimum driving activity. Said estimate is presented to driver.EFFECT: fuel savings. |
