Self-driving cars are still a long time away from being widely available, but urban infrastructure changes can start to be deployed today: bollards, segregated

Self-driving cars are still a long time away from being widely available, but urban infrastructure changes can start to be deployed today: bollards, segregated bike lanes, at grade pedestrian crossings, pedestrianized streets, divergers, roundabouts, etc. With mitigation infrastructure you either make it impossible for the bad thing to happen, or you greatly reduce their impact. Infrastructure doesn't have to rely on humans not screwing up, if anything it expects it.