Insa Turbo, a leading Spanish retreader and rubber recycler has proposed to Toledo state that used tyres can be used to improve road safety.
Foundation of the National Confederation of Driving Schools (CNAE) Designed to Utilise Used Tyres
The idea is to create a rubber guardrail recycled from end of life tyres “that absorbs and neutralises in some measure the kinetic energy generated by accidental impacts, ” they explain.  The inclusion of a highly reflective strip also helps improve visualisation of the roadway and its hazard points.
The Insa Turbo project would be easy to implement, because it takes advantage of the majority of existing guardrails as a base for support. Along with added protection for motorists and cyclists, this rubber tyre guard would also recycle 2,287 tyres per kilometer installed. This would prevent the emission into the atmosphere of 169,000 kilograms of carbon dioxide as well as the saving of 57,000 litres of oil.