Percent Mode Share to Public Transport
The definition of public transport usually includes all passenger services by rail, buses and minibuses, ferries and paratransit but excludes taxis which are normally considered separately as a private mode.

The percent mode share to public transport is measured by dividing the total public transport trips in any time period (usually an average weekday) with the total number of trips over the same period. A trip is defined as a journey from origin to destination. A public transport trip may consist of more than one boarding if an interchange is needed because there is no direct bus connecting origin and destination. Trips by car or other private mode would normally have only one boarding.

The percent mode share to public transport gives an overall measure of the importance of public transport in any city. The measure is usually obtained from a household survey conducted as part of an urban transport study and cross-checked against observed public transport boardings and occupancy counts of traffic at strategic locations across the city.