From: Factors affecting performance improvement of the metro system in cities
Street transit | This category includes most public transport buses, trolley, and trams, which are the lowest categories in terms of implementation and operating costs as well as speed. Therefore, the quality of their services in terms of speed and reliability is lower than other types of transport in the streets. Consequently, this type of transport cannot compete with private cars or even minimize them, unless other conditions discourage the use of private cars. |
Semi-rapid transit | The clearest example of a mass transit system representing this category is the Light Rail Transit-Bus Rapid Transit. |
Rapid transit | The clearest examples of this category are Rail Rapid Transit—or metro systems; Light Rail Rapid Transit (LRT with Class ROW A only), Automated Guided Transit and Monorails, which may have different technologies, such as supported, suspended, etc. |