As a Robot user I want to my robot to avoid colliding with people or objects so that it won't damage anything or hurt anyone

More details

• Why is this needed?
  • This is needed for indoor and outdoor robot navigation in most (all?) cases
  • Example: a robot in a warehouse should avoid colliding into the walls or shelving, and dynamically avoid people that cross its path
• What is the expected user interaction?
  • The user should be able to walk in front of a robot and it should avoid crashing into that person
• Are there any non-functional requirements? (build system, tools, performance, etc)