This makes AWD a better system than 4WD for the average ... for accelerating in slippery conditions. But these systems help only with accelerating the vehicle on snow-covered or icy roads.

Snow mode will alter the traction control system to make it more effective in snowy conditions. Both AWD and 4WD systems ...

Part-time 4WD systems ... for typical driving conditions. They are most commonly installed in cars intended for use on-road, but in occasional slippery conditions such as snow and ice.