The best replacement for guardrail is handrail.

The best alternatives to guardrail are rated as following:
★★★★★  handrail
★★★  guardrail
★★  guide rail
★  guard rail

Your alternative for guardrail is not listed? Suggest!
Speaking about guardrail, one probably shouldn't forget about handrail.

Other search terms related to guardrail and their ratings are:
★★★★★ handrail
You have in mind a companion for guardrail and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of guardrail in all years. Click on graph for more.
guardrail
handrail
guardrail