When autonomous vehicles encounter an obstacle, they brake. Moreover, why in this problem, that appears in absolutely every thread about self-driving cars, is there a family in a crosswalk with no awareness whatsoever of a speeding vehicle? Are they deaf and blind without assistance? This is not a joke.<p>The car will be aware of the presence of the crosswalk. It will slow long before arriving at it. So the deaf and blind family will likely be safe.