The bus unit travels in an organized way the many main routes which connect the different parts of the city together. The services can be classified into different types on the basis of the purpose of use route length, type of bus, and frequency of passing.

The most common type of bus service  helps mobilize people from one urban population center within the city to another in a massive way that is cost-efficient and relatively fast.

 Park and Ride Bus Services: Are shuttle buses that provide transport for a park or facility that features a particularly extensive parking lot, as to make it easier for the guests to arrive at their destination. 

Feeder bus:  Specifically refers to a bus or shuttle bus that transport passengers to a place, facility, or station where they are meant to board another transportation vehicle that is meant to help them arrive at their actual destination, figuratively ‘feeding’ their passenger to the next vehicle. 

Bus rapid transit (BRT): Are bus units that have been enabled with roads exclusively for their use so have to deal less with traffic and can deliver on the ‘rapid’ part of their name.

The scheduling of buses within big cities is a hectic endeavor. Provided times for arrivals and departures should be taken as a simple guide with wide margins for variations since traffic jams are particularly common as  accidents. The best bus companies around take this into account when scheduling and also seek to enable extra units when rush hours are reached and the volume of passengers is expected to rise exponentially.