HYBRID ELECTRIC VEHICLE AND METHOD OF POWERTRAIN CONTROL FOR THE SAME

A hybrid electric vehicle or a powertrain control method therefor controlling a powertrain with a more effective recognition of an entry into a low emission zone may include steps of: determining by use of image-based road-sign recognition information an entry into a zone in which an amount of exhaust gas is requested to be reduced; determining an average size for a type of the zone in case where the entry thereinto is determined by the control unit; and controlling a driving mode to be Electric Vehicle (EV) mode until it is determined based on the average size that the vehicle exists the zone.