A trip distance recorder for a motor vehicle includes a character display and several front panel keys. The recorder stores an operator-definable "trip type" code associated with each key. At the start of a trip, an operator presses one of the keys to select one of the stored codes. The recorder then...http://www.google.fr/patents/US5337236?utm_source=gb-gplus-shareBrevet US5337236 - System for categorizing and recording vehicle trip distance
System for categorizing and recording vehicle trip distance
