To prevent injuries when using bunk beds, don't allow little children to use a bunk bed, permit only one person to use the top bunk, don't allow any items to be hung on the bed, reiterate your safety rules to guests, make sure there are guardrails on the upper bunk, ensure the guardrails can keep the mattress in place, get a mattress that is the right size for the bunks, and make sure the ladder is sturdy...

Bleachers are widely used in the United States for viewing sporting events, parades, graduations, and many other activities...

Highway Guardrails They are as common as billboards but equally important to motorists' safety as the seat belts they wear...