The duties of police officers are more than to pull people over, they perform multiple duties, therefore their work is really tough because they must be on duty round the clock, though police force works in shifts.

Here are some duties of Police officers

They are assigned to the locality of cities, where there is fear of disorder and disruption.
They also help to maintain law, peace, and order.
Some police officers are also trained to control traffic and riots.
They help to settle disputes among people.
They fall back on firing in a worsen situation, but only with the approval of their superior.
Now that you already know that police officer do more than pull people over, our lives and properties are safe in their hands (at least to some extent).

NIGERIAN POLICE FORCE APPLICATION REQUIREMENT:

The following are the Nigerian Police Force Application Requirement:

Applicants must be a Nigerian either by birth or nationalization and possess National Identity card.
Applicants must not be less than 18 years of age or more than 25 years of age.
Before you can apply for Nigerian Police force you must not have any form of abnormalities or deformities such as Bent knees, flat feet, and amputation of any part of the body, deformed hands that cannot perform the full functions of the hand.
Minimum height for the applicant must not be less than 1.67 metres for males and 1.64 metres for females.
Must have an O’ Level certificate at least five credits passes in English Language and Mathematics in not more than two sittings in WASSCE/GCE/NECO/NABTEB.
Advanced Level (A level), Ordinary National Diploma (OND), National Certificate in Education (NCE) or their equivalents (for cadet Inspectors).
University degree or a Higher National Diploma (HND).
Applicants must download and fill the Guarantors’ form.
All applicants must be medically fit and meet the medical standards of the Nigerian Police Force.
Source: https://www.schooldrillers.com/nigeria-police-ranks-and-symbols/