Yes , introducing cycle rickshaws in cities will reduce the pollution.
cycle rickshaws not use any kind of fuel for running whereas other vehicles like cars, buses, etc. requires petrol, diesel, etc, kind of fuels. these natural resources get exhausted having a two fold effect.
1:reducing natural valuable resources
cycle rickshaws will be the best alternative for these.they will not only help out in reducing pollution and saving resources but also in creating more employment opportunities for the poor.