An April 25 1933, Samuel R. Garner was granted U.S. Patent No. 1,905,377 for a Highway Guard Rail. This was for a guardrail used on highways and which included a character embodying resilient means for supporting the rail in position. Another important object of the invention was to provide novel means for connecting the adjacent ends of the rail sections together and for slidably mounting said rails on the resilient supporting means.

Further developments in the world of guardrails happened in 1992 when a yellow polymer cover sleeve for steel guardrails was introduced by a Detroit based company, which enhanced the visibility of steel safety guardrails in industrial environments and removed the need for continual repainting. 

Later, at the end of the 20th century, a number of companies developed safety products constructed with polymer designed specifically for industrial environments and in 2001 a dedicated industrial alternative to steel guardrail was invented by a British based company, and thus the first fixed flexible polymer safety guardrail was introduced to the market.

In the early 2000s, an Italian company added a version of a polymer bumper providing small bumpers for walls and equipment in the food industry. A Belgian company also introduced a flexible barrier in 2010 and in 2014 a US based company introduced a hybrid polymer-steel guardrail for industrial environments.