Karachi Urban Freeway Signal Free Corridor and Its Effects

Topics: Freeway, High-occupancy vehicle lane, Road traffic management Pages: 19 (6238 words) Published: May 15, 2011
pls acknowledge and ask for more papers at fb As-if mahsud or saifty@gmail.com Intro
Transportation in Pakistan is extensive and varied but still in its developing stages and serving a population of over 170 million people.. Much of Pakistan's road network (National Highways) and railway network were built before 1947, mainly during the British Raj. In recent years, new national highways have been built, with the addition of motorways which has accelerated trade and logistics within the country. As one of the most rapidly growing cities in the world, Karachi faces challenges that are central to many developing metropolises, including traffic congestion, pollution, poverty and street crime. It has the 9th most dense traffic in the world. The Karachi mayhem

Karachi is Pakistan’s biggest city and it is growing tremendously, so are its problems, Karachiites are suffering from variety of problems. Terrorism, water scarcity, high prices, pollution, unemployment. Citizens’ Concern

there is no dearth of problems when it comes to Karachi so I was not impressed when I read a claim by Samandari Baba(The self proclaimed saint, who lives somewhere in Defence also claimed that he went to sea and lived there for 40 days inside water and returned to the city only to warn), that Pakistan’s biggest problem is Kashmir and Karachi’s biggest problems are traffic and delayed marriages of girls. He requested the Government to solve the problem of traffic in Karachi on priority basis, and first lady to do something about the delay in marriages of young girls. Much of city’s movements is via pavement though there are other alternatives.  Karachi Circular Railway $1.6 billion project will completed by 2013 ,liyari ferry movement. The city government has introduced an initiative to alleviate the transport pains by introducing new CNG buses. These problems continue to earn Karachi low rankings in livability comparisons The Economist ranked Karachi fourth least livable city amongst the 132 cities surveyed[73] and  BusinessWeek ranked it 175 out of 215 in livability in 2007, down from 170 in 2006

traffic jams in Karachi have claimed around 500 lives, in jan-feb 2007, as ambulances could not find way to the city hospitals, due to choked roads, Many new roads and underpasses are under construction but the roads are squeezing beneath ever increasing vehicles. The current lane expansion spree only delaying the attack of awaiting even bigger traffic monster, as we are delaying the American attack says the samandari baba. With no mass transit system in sight, there is little hope of solution in the near future. Signal Free Corridors

The construction of new bridges/flyovers, underpasses and signal-free corridors (e.g., Corridor 1: S.I.T.E. to Shahrae Faisal,
Corridor 2: North Karachi to Shahrae Faisal,
Corridor 3: Safora Goth to Saddar)
has improved the traffic flow in Karachi. The eventual completion of Corridor 4 (from the airport to Metropole Hotel)
is expected to substantially reduce the travel time to reach the city centre and airport. Causes of Traffic congestion 
Traffic congestion is a condition on road networks that occurs as use increases, and is characterized by slower speeds, longer trip times, and increased vehicular queuing. The most common example is the physical use of roads by vehicles. When traffic demand is great enough that the interaction between vehicles slows the speed of the traffic stream, congestion is incurred. As demand approaches the capacity of a road (or of the intersections along the road), extreme traffic congestion sets in. When vehicles are fully stopped for periods of time, this is colloquially known as a traffic jam or traffic snarl-up. Traffic congestion occurs when a volume of traffic or modal split generates demand for space greater than the available road capacity, this is point is commonly termed saturation. There are a number of specific circumstances which cause or aggravate congestion; most of...
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