Search results for "urban transportation"
showing 2 items of 12 documents
Solving congestion in cities : policies and contradictions
2009
International audience; Most cities in the world are now facing traffic gridlock. Local governements and transportation authorities are trying to tame a phenomenon which takes in fact very different forms depending on the level of social and economic development. Is it really possible to compare freeway gridlock in Los Angeles with rickshaw gridlock in Dhaka, Bangladesh ? When French cities embrace the development of urban bicycling, Chinese cities limit the use of bicycles. Using cases of cities in different parts of world, this presentation willl try to find some common trends in urban mobility policies and examine some contradictory developments.
Applying a new synthetic environmental indicator to urban transportation scenario
2002
Through this work will be presented a suitably modified version of a simple model devoted to the evaluation of pollutant matters released in urban contexts by the transportation sector. The method, essentially referring to the pollutant emission factors provided within the European "COPERT III" approach, only requires the knowledge of data concerning the running car fleet on the analysed site. The methodology is here utilised for comparing environmental and energy effects of different transportation policies to be adopted in a given urban area. By imposing modal changes to the transportation demand and, consequently, by re-allocating people from cars to public means, the effects on the rele…