Places

Advantages

Disadvantages

Schools

Geographic extent

Different type of people availability

Low cost

Easy trust gain

High number of observations

Cumbersome topic for students

Hard permission gathering process

Insurance Payment centers

Enough time to ask

People mind readiness

Trust gain

Uninsured people unavailable

Impatient people

Universities

Availability of students

Enough time to ask

Low cost

Easy permission gathering process

Sample bias (restricted to educated people)

Fuel Station

Enough time to ask

Car owners availability

Hard trust gain

Bad distribution respecting distance

Vehicle inspection centers

Enough time to ask

Easy trust gain

Geographic extent

Uninsured people unavailable