hi JDP,
yes, that was a valid point, even in my country with worst roads and worst of all drivers we have warning markers for curves.
But the question is how safe they are? for example if the narrow road is infested with heavy vehicle traffic, a slow speed of 20kmph(12mph) by a careless driver might inflict grevious injuries to the pedestrian/cyclist. The law cannot blame the driver as he was not overspeedng. I dont know how frequent this happens in developed countries but the numbers here are hard to digest.
I once tried to bring this issue with one of friends here, what can be done to prevent the appaling number of road accident deaths in india, i got a shocking reply he said atleast it aids in population control.
regards
srinipartha