Trains are among the most popular means of transport, and because of their economic and environmental aspects, their use should increase in the next years as locomotives and cars get more and more technologically advanced, comfortable, fast and efficient.

The railway infrastructure sector, however, has not undergone any innovation in the past decades. The standard solution, nowadays, consists of concrete railway sleepers, introduced at the beginning of the 20^th century. Since this technology is already quite out-of-date, it entails numerous problems, such as:

• ballast pulverization,
• high noise and vibration levels, and,
• last, but not least - elevated maintenance costs.

Greenrail sleepers are in fact sustainable, as they are made of recycled plastic and rubber collected from End-of-Life Tyres (ELTs). They consist of an outer cover made of a blend of ELTs and recycled plastic, and an inner core of pre-stressed, reinforced concrete. They guarantee all the mechanical characteristics of the railway sleepers for various types of rail lines - including high-speed ones, thus offering countless advantages.