Sri Lanka, with a total population of around 22 million, has 8 million vehicles. This has caused a continuous vehicle congestion on roads. This can be overcome only by developing a common public transport system, Megapolis and Western Development Minister Patali Champika Ranawaka said.The Minister who emphasised that this could not be resolved by merely widening roads and building expressways added that his ministry had initiated action to develop the common public transport system under a strategic Town Development Project as a final solution to it.