Obstacle - Physical Barriers

Physical Barriers

As physical obstacles, we can enumerate all those physical barriers that block the action and prevent the progress or the achievement of a concrete goal. Examples:

• architectural barriers that hinder access to people with reduced mobility;
• doors, gates, and access control systems, designed to keep intruders or attackers out;
• large objects, fallen trees or collapses through passageways, paths, roads, railroads, waterways or airfields, preventing mobility;
• sandbanks, rocks or coral reefs, preventing free navigation;
• hills, mountains and weather phenomena preventing the free traffic of aircraft;
• meteors, meteorites, micrometeorites, cosmic dust, comets, space debris, strong electromagnetic radiation or gravitational field, preventing a spacecraft from navigating freely in space.