Providing dedicated space within the street helps transit networks to provide reliable, convenient, and frequent service to passengers without delays from mixed traffic, while increasing the mobility capacity and environmental sustainability of the city.

Transit travel time is affected by the type of transit facility, whether exclusive, dedicated, or mixed. It is also impacted by the travel lane width, enforcement, signal priority, and the type of service and vehicle. The same service may have different transit facilities along the same corridor, according to the context, mix of uses, or street width.

Maximum speeds for transit vehicles should be determined based on safety needs and the street context. In urban streets, speeds should not exceed 40 km/h, and in central city or neighborhood streets where there are high volumes of pedestrians or other users, maximum speeds should be 15–20 km/h. Dedicated facilities help transit speeds to be maintained efficiently by avoiding congestion in mixed traffic. In shared transit streets with people walking in the same roadbed as transit vehicles, speeds should be as low as 10 km/h.

Vehicles used for collective transit vary by capacity, comfort, speed, and cost, but they can all contribute to creating comprehensive networks. The choice of vehicles in the system will impact the level of carbon emissions, air quality, ride quality, and noise levels for residents along designated routes. Vehicle choice should be driven by these issues as well as passenger capacity and comfort, operating expenses, and sustainability.