Professional and public awareness of these problems is increasing. To improve quality of traffic, the technologies most commonly present are about traffic management. Generally, integration between transport planning and urban development has not been common practice, but there are exceptions, and governments are making more efforts in this way. It is important to reduce car use and stimulate the use of less polluting modes. Authorities need to have a clear vision on transport in general and public transport in particular.
Political audacity is an important factor for their success.
Compromises must be avoided, as they often reduce the force of the supporting policy. The time when the professional decided what was necessary and implemented it in virtual isolation from the community is now a thing of the past. Consultation with the public and other stakeholders at appropriate stages of any project will usually entail some cost and will take time if done properly, but this will be marginal compared with what can be gained in added value from these consultations. Driven by fiscal constraints and disappointed with the performance of state-provided infrastructure services, Governments are increasingly turning to the private sector for solutions in financing, building and operating. There are usually three main levels of government municipal, regional and national involved in planning, decision making and financing of transport projects in metropolitan areas.