The fact that defendant CD's motor vehicle left the road and struck [specify object] should be taken into consideration in deciding whether CD used reasonable care in driving. That fact permits you to find that CD was negligent, but, standing alone, does not require such a finding. If, taking into consideration all of the facts and circumstances existing at the time of the accident, including the condition of the road, the condition of the weather and the speed at which CD was driving you find that CD's car left the road as a result of (his, her) failure to use reasonable care, your finding will be that (he, she) was negligent. If you find that the car did not leave the road as a result of CD's failure to use reasonable care, the fact that the car left the road cannot be the basis of a finding that CD was negligent.

Comment:

      The fact of a car leaving the road raises a presumption of negligence. Clearly however, not all instances of a car leaving the road  are the result of negligence. The sudden emergency doctrine may give rise to evasive action resulting in car leaving the road