the case of singapore which is at the forefront in building technologydriven traffic management mechanisms in asean provides some noteworthy examples based on most recent information the expressway and tunnel networks that form part of the its stretches about km with a total lane length of km lta it is equivalent to about of the total length of road lanes in the country incorporating arterial collector and local roads notable thoroughfares included are the kallangpaya lebar expressway marina coastal expressway central expressway fort canning tunnel and woodsville tunnel