Final answer:
A driver whose physical condition necessitates stopping should continue to the nearest rest area unless the situation is life-threatening. Safety should always be the priority, and immediate assistance must be sought if necessary.
Step-by-step explanation:
When a driver's physical condition during a trip deteriorates to the point that it requires stopping, but stopping immediately is not safe, the driver should continue driving to the nearest rest area. This is because the safety of the driver and others on the road must be considered. If the driver stops abruptly in unsafe conditions, it could result in an accident. Therefore, it is imperative for the driver to find a safe location such as a rest area to pull over. Once there, they can seek medical assistance or wait until they are capable of driving safely again.
For example, if a driver experiences sudden dizziness or severe discomfort that impedes their ability to drive safely, they should drive cautiously to the nearest safe location before seeking help. However, if the condition is life-threatening, or if continuing to drive is unsafe in any way, the driver must pull over immediately and seek assistance.