The ceaselessly increasing number of trips on urban highways and major arterial roads have caused serious congestion and air pollution problems. Thus many transportation agencies have persevered in their efforts not only to alleviate such problems, but also to minimize social costs. However, the complex nature of such problems has strongly hindered transportation agencies’ ability to consider a...

the intelligent transportation system (its) provides wireless and mobile communication between vehicles and infrastructure to improve the safety of transportation and make the journey more enjoyable. this system consists of many fixed and mobile nodes (vehicles, trains, vessels, air planes), wireless and wired telecommunication technologies to exchange information between mobile nodes or betwee...

Mr. Chairman and members of the Committee, I am Michael Replogle, and am pleased to testify today on behalf of Environmental Defense, a national organization with over 300,000 members nationwide, which I serve as Transportation Director. Our Living Cities program designs marketbased solutions to promote clean air, water and land in major metropolitan areas nationwide. Today I also represent the...

We are pleased to introduce this collection of papers covering different aspects of intelligent transportation systems. These papers were selected from a list of papers presented at the Intelligent Transportation Systems Conference and Intelligent Vehicles Symposium, jointly held in Detroit, MI, October 3–5, 2000. In order to bear witness and celebrate the large success of these two scientific ...

for determination of so2 concentration and its variation due to time and location within tehran air-shed area, department of environmental health, school of public health installed two units of semiautomatic air sampler, in tehran university campus and ghazvin-square area. collected samples were analyzed according to hydrogen peroxide method and for each month arithmetic mean was calculated. th...

Air quality is a serious and worsening problem in the rapidly growing cities of sub-Saharan Africa (SSA). However, the lack of ambient monitoring data, and particularly urban roadside concentrations for particulate matter in SSA cities severely hinders our ability to describe temporal and spatial patterns of concentrations, characterize exposure–response relationships for key health outcomes, e...

Air transport has experienced phenomenal growth in China over the last 30 years, but studies on China’s airport development are few. This paper aims to fill in this literature gap by focusing on the determinants of airport development in the Chinese regions using the most up-to-day and comprehensive data on China’s airports and their related economic and geographical variables. The empirical re...

Road systems 1 , railway systems 2 , air traffic systems 3 , and, for example, container vessel shipping 4 , all share underlying abstractions such as transportation nets with hubs (road intersections , train stations, airports and harbours) and links (road segments, train tracks, air and sea lanes) and their states of being open or closed for certain flows of traffic across hubs and along link...