In Milan, congestion charges were spent entirely on measures to promote sustainable mobility, including the bike sharing system “BikeMi”. This which led to a considerable usage growth concentrated in the area covered by their scheme.
London is one of the cities featured in the report, having introduced a charge in 2003. Cycling in the inner city has increased by 66 percent since the introduction of the congestion charge. Cycling has also become safer, says the ECF: crashes in Central London have decreased by 40%. Full copy of the report can be found here