Tricycles are built in a variety of styles, which differ from city to city, and are usually made locally by building a sidecar and affixing it to an imported motorcycle. Usually both the cycle and sidecar are covered, but not always by the same roof. Larger companies, such as Fitcor Marketing, also manufacture passenger tricycles. They are built with more seats with the motor situated at the back, rather than below the driver as per a motorcycle.
Read more at: https://en.wikipedia.org/wiki/Motorized_tricycle_(Philippines)