Enjoy riding bicycles? Did you know the Bureau of Indian Standards (BIS) has come up with a specific standard for helmets for cyclists, skate boarders and roller skaters — for the first time, and it is coded “IS 18808”. The move by BIS to nudge all stakeholders to promote ISI-marked helmet is crucial for a country where helmet use for non-powered vehicles is only voluntary (bicycles do not come under Motor Vehicles Act).