Words to Describe guardrail

How guardrail often is described ("________ guardrail")

• upper
• intermediate
• indispensable
• broken
• median
• high
• sturdy
• wooden
• white
• type
• flimsy
• heavy
• iron
• outside
• main
• right
• nearby
• low
• double
• starboard
• protective
• rear
• composite
• twisted
• outermost
• concrete
• standard