When driving on an interstate:

Signal, check your mirrors, and check your blind spot before changing lanes or passing on an interstate. Only stop on the shoulder of the interstate in the case of an emergency and change lanes as infrequently as possible. Cruise control should not be used in heavy traffic or under poor weather conditions.

• Stop on the shoulder of the road if you are tired.
• You should always use cruise control.
• Signal, check mirrors, and check blind spots before changing lanes.
• You should change lanes often.