Full-time 4WD vehicles are propelled by engine power distributed constantly and appropriately to all 4 wheels.

Not only does this ensure better handling on dry, paved roads but also permits better traction when driving on slippery, wet or snow-covered roads and when moving out of mud.

These vehicles, however, are not designed for offroad use, and are unsuitable for driving on bumpy ground that may cause excessive strain. Fulltime 4WD vehicles should be driven only under the same conditions as are suitable for ordinary frontwheel drive vehicles.