First we can easily observe that ban of private vehicles alone is simply not a viable option. For a start, city dwellers in many urban areas in the world rely heavily on personal vehicles to travel. If they are banned, people will not be able to travel without suitable alternative options such as buses or subway trains which are unfortunately limited in both quantity and quality especially in developing countries. On top of that, any prohibition on movement will prove to have detrimental effects on the economy since cities are usually trade and business centers where a lot of moving are required by nature. In addition, where will all the automoblies go is also a matter of great concern as the policy does not do anything to cut down the volume of traffic itself.For that reason, in all probability,the surrounding areas will overflowed with traffic once the ban is applied. Moreover, government will lose a large amount of money annually through taxes on vehicle and subsidies to keep the ban going.
Thus it is of paramount importance that the authority develops a long-term strategy to solve the issue, starting by finding out the primary cause and dealing with it step by step.In my opinion, the problems lie in the insufficent infrastructures and poorly planned cities. Cities in developing countries are known for growing quickly without plans or organisations, therefore there is little room for improvements. As a result, traffic congestions in these parts of the world unsuprisingly are also the worst.
In order to tackle the problem, there should be a focus on ameliorating the infrastuctures, reoganirsing the city, then developing a suitable public transport system that is able to satisfy peoples need to travel. Finally, once the above-mentioned changes are done, ban of private vehicles could be used sparsely as an incentive for people to change their travelling habit. Once people realise the advantages of using public transports, they will willingly leave their vehicles at home, thus effectively solves the problem.
To sum up, though the ban of private automobiles seems to have some merits, it overlooks some deeper and more basic factors. So as I see it, gorvernments need to bring about a change in peoples attitude towards public transport. In order to do so, they need to improve the current state of the transport system, only once city dwellers see the benefits of leaving their private vehicles at home,then the problems will automatically be solved.