[1] It is a hybrid discipline involving aspects of transport engineering and traditional urban planning.
[2] Indeed, many transit planners find themselves involved in discourse with urban-land-use issues such as transit-oriented development.
For example, in urban areas, a system may attract enough ridership to support high frequencies of service.
In this model, routes are designed to bring buses (or trains or ferries) together at a central location at predetermined times.
[4] Similarly, impacts on social equity have been paid increasing attention by transit planners in recent years.