While driving, the driver suddenly begins complaining of severe pressure-like chest pain and difficulty breathing. What should be done?

Explanation

Severe pressing chest pain with difficulty breathing may signal a serious heart problem, and the driver could lose control at any moment. So the vehicle must be stopped at once and the hazard warning lights (the "emergency alarm") switched on to warn others of the danger, rather than driving on to a hospital, giving tablets or suggesting a walk (Rules, point 22).