First of all,
(comma, not a full stop - guess it's a typo :D ) public transport is a key factor to minimize the number of vehicles on the street.
Big cities nowadays can be described as melting pots. The problem off traffic overload, caused by overpopulation, has aroused interest of many city planners. It is argued that only if thedemand to go out on the street is cut down can we solve the seemingly insurmountable issue of traffic gridlock. However, I have to profoundly disagree for there are still two viable solutions besides besides this way.
... Well... here you beat around the bush. You do not introduce the background of your topic adequately. In fact you have not mentioned the core of your prompt -
the amount of traffic in cities today is by reducing the need for people to travel from home for work
... your prompt specifically says that it for commuting to work and also, it talks about a need and not a demand.