During the period when any annual national “march of dimes” campaign is taking place for infantile paralysis, any city or town in this state, in which parking meters have been established by authority of law, is authorized to permit the inserting of dimes into any of the parking meters by pedestrians or motorists, the dimes to be collected and turned over to the respective committee in charge of the collection of dimes for the specific “march of dimes” campaign to be used for those purposes.