Public transport planning

Public transport planning or transit planning is the professional discipline responsible for developing public transport systems. It is a hybrid discipline involving aspects of transport engineering and traditional urban planning. Indeed, many transit planners find themselves involved in discourse with urban-land-use issues such as transit-oriented development.

Transit planners are responsible for developing routes and networks of routes for urban transit systems. These may follow one or more models depending on the character of the communities they serve. For example, in urban areas, a system may attract enough ridership to support high frequencies of service. At these high frequencies, services can operate at demand service levels where the specific frequency of service in each corridor can be independent and where transfers can reasonably occur at random. In less densely developed areas service may operate somewhat infrequently. To optimize the quality of trips for customers, some systems compensate by operating a timed-transfer system. In this model, routes are designed to bring buses (or trains or ferries) together at a central location at predetermined times. Customers then transfer between the vehicles which leave a few minutes later. In systems committed to this system, routes are designed to take travel time into account.

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