A section of Calcuttans has demanded that political parties include in their manifestos steps ahead of the Assembly polls they would take to tackle air pollution and create infrastructure so that cyclists could be out in more numbers. A number of cyclists raised the demand at a gathering outside Elliot Park on Wednesday, which was also attended by tram and nature lovers. The cyclists said a large number of Calcuttans commute between 5km and 6km daily. They called on the government to create dedicated cycle bays so the distance could be covered by bicycles, which would result in lower carbon emission.