There are two angles i’d like to come at this with, one is systemic and the other is more individualistic. Systemically, bike infra isn’t given the same clearing priority as auto traffic, making it much harder to use your bike to get around. Convincing city council to invest in better infrastructure and maintenance is a good place to help getting as many people as possible on bikes when it gets cold out Individualistically, winter tires go a long way to overcome whatever your specific geography’s winter challenges are. Studded tires are great to combat icy conditions and wider tires can help float over slushy or snowy conditions But biking in the winter has a big mental block for a lot of people, even when they’re used to playing winter sports. The key, like anything outdoors in the winter is preparation; having the layers appropriate to the conditions seriously improves your comfort. In the same way you wouldn’t ski in a t shirt, you need to dress the part to bike in the winter