Traffic volumes have been simultaniously increasing in both individual and public transportation, which cause troublesome traffic jams in our cities. Separated track is provided for track-based transportation systems, so they don’t have conflict with road traffic, but the buses and trolley-buses depend on the traffic circumstances. Covert tramway tracks provide protected routes between the stops for buses, moreover, it is an important point of view for sustainable land uses. The public transportation lanes, where the same surface is used by trams, buses and trolley-buses, mean the spread of a new view in transportation and urban design.
In a short time period after installation the new tramway tracks, pavement structure problems appeared possibly due to bus and trolley-bus use.
Since the appearance of the pavement structural problems, warranty works are often on these tracks. These works cannot be fulfilled on week and school days, so every summer they have to work on. From the operator’s point of view, these warranty works are not convenient because every work needs traffic distraction and temporary traffic changes, which causes high costs on both operator and user sides.
The aim of this research is to collect the tramway superstructures where these pavement problems appeared and to systematize them all by the observable failures in asphalt and concrete upper layers. After reviewing the tramway track design regulations and looking for new technologies, I would like to suggest new guidelines to design the future superstructures in this kind of traffic situations.

public transportation, common-used lanes, pavements, tramway tracks