Youth
Driving age is the age at which a person can apply for a driver's license. Countries with the lowest driving ages (below 17) are Australia, Canada, El Salvador, Iceland, Israel, Estonia, Macedonia, Malaysia, New Zealand, Norway, the Philippines, Russia, Saudi Arabia, Slovenia, Sweden, the United Kingdom (Mainland) and United States. The Canadian province of Alberta and several U.S. states permit youth driving as low as 14. Niger has the highest minimum driving age in the world at 23. In India, driving is legal after getting a license at the age of 18.
Driving instructor
To be eligible to be a driving instructor, one must possess several requirements such as obtaining a high school diploma (College/University degree is not compulsory), owning a driving licence and a driving instructor licence as well, gaining driving experience of 2–5 years (varies according to different countries), having clean driving records, passing driving instructor vision test and the age of the driving instructor must be at least 21 years old. 
The job openings of a driving instructor differ according to the growth of the population.