Annex 6 Limitation of Conventional Bus Priority Lanes: Case Studies


Tehran has an extensive network of busways – the current length of dedicated bus lanes is some 84 km. The length of one-way lanes is 31 km. Eleven lanes totaling 26 km are two-way, with a dividing kerb. There are 47 contra-flow lanes on one-way streets and 154 bus routes use dedicated lanes for part of their route.

Busways and lanes have been used in Tehran for more than 15 years. Exact passenger figures are not known, but the city authorities estimate a daily demand of almost 400,000 pax on the main cross-city corridor, which translates into a maximum value of some 7000 pax/h/d for the 7m busway. This corridor currently uses a mixed fleet of articulated trolleybuses and diesel units.

Source: PADECO
Figure 6 NE Busway in Tehran

There is no high-tech ITS traffic solution, GPS control or modern, wide stations. Respect for the busways is not heavily enforced, turning flows often block the busway and it is not fully continuous in some congested zones.

The city authorities have realized that there are serious limitations on the number of buses that can effectively use this form of infrastructure and are in the process of planning and designing an upgrade of one main corridor to HCBRT standard.

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