How we design streets, neighbourhoods, sidewalks, walking trails, transit and communities determines how safe, supported and connected people are.
For example, narrow sidewalks make it difficult for pedestrians to share with children on tricycles, people in wheelchairs or those elderly who require walkers. This either forces them to use the street (not safe) or reduces their willingness/ability to use the streets safely.
Similarly, bike lanes that only connect richer, greener neighbourhoods, means lower income neighbourhoods, who likely need bike lanes as a cheaper alternative to owning a car, are limited to how they can get around and with financial difficulties may have fewer options to begin with.
More info:
Vision Zero Canada