London came up with London congestion charge
on Feb 17 2003. In this ,the vehicles traveling through the
Congestion Charge Zone area will be charged a particular fee.
The fee will be charged from 7:00 to 18:00 from Mondays to
Fridays and will not be charged during weekends,public holidays or
between Christmas Day and New Year's Day.
The main aim was to reduce high traffic flow and pollution in
these areas.This was also to increase the investment funds of
London's transport system.
After 10 years,that is,in 2013,it was seen that,vehicle
congestion has reduced 10% from the baseline and an overall
reduction of 11% in vehicle kilometers in London between 2000 and
2012. The traffic speeds are getting progressively slower over the
past decade,in the central London.