The following are exempted from the operation of this chapter:

1. (1) Privately owned vehicles not ordinarily used in the business of transporting persons who are sick, injured, wounded or otherwise incapacitated or helpless;
2. (2) A vehicle rendering service as an ambulance in case of a major catastrophe or emergency when the ambulances with permits and based in the locality of the catastrophe or emergency are insufficient to render the services required;
3. (3) Ambulances based outside the State rendering service in case of a major catastrophe or emergency when the ambulances with permits and based in the locality of the catastrophe or emergency are insufficient to render the services required;
4. (4) Ambulances owned and operated by an agency of the United States government;
5. (5) Ambulances based outside the State engaged in interstate transportation.

16 Del. C. 1953, § 6726; 58 Del. Laws, c. 177.