What is the 4-valve engine?
An engine has valves that let the air-fuel mixture into the combustion chamber to be burned and then draw out the exhaust gas after the combustion. A conventional engine…
Global Urbanization
Urbanization has been one of the dominant economic and social changes of the 20th century, especially in the developing world. Although cities played a significant role throughout human history, it is not…
The Urban Transit Challenge
As cities continue to become more dispersed, the cost of building and operating public transportation systems increases. For instance, as of 2015, about 201 urban agglomerations had a subway system, the vast…
Mitigating Congestion
In some areas, the automobile is the only mode for which adequate transportation infrastructures are provided. This implies less capacity for using alternative modes such as transit, walking, and cycling.…
Congestion
Congestion can be perceived as an unavoidable consequence of the usage of scarce transport resources, particularly if they are not priced. The last decades have seen the extension of roads…
Automobile Dependency
Automobile use is related to a variety of advantages, such as on-demand mobility, comfort, status, speed, and convenience. These advantages jointly illustrate why automobile ownership continues to grow worldwide, especially in urban areas…
Urban Transport Challenges
1. Urban Transportation at the Crossroads Cities are locations having a high level of accumulation and concentration of economic activities. They are complex spatial structures supported by infrastructures, including transport systems.…
Changing Urban Transportation Systems for Improved Quality of Life
Cities can measure the quality of their transportation systems and apply their insights to their transport policies. The efficiency of transportation systems can be defined by their availability, affordability, efficiency,…
7 Transportation Challenges in Urban Areas
1. Traffic Congestion Overloading is the primary cause of congestion. Patterns of land use and transport infrastructure influence traffic flow. While both commuter and freight traffic contribute to congestion, passenger…
What Is Urbanization?
In 2008, the United Nations announced that 50 percent of the world’s population now lives in urban areas, a milestone in demographic history. News reports on the subject frequently rephrased…
