01 Jul 2019

“Smart Tunnel”: Innovative approach to improve the tunnel maintenance strategies

Recently, Olympia Odos completed the pilot installation of an innovative tunnel equipment monitoring and maintenance system on the first tunnel of the motorway.

The said advanced system called “Smart Tunnel” continuously monitors the tunnel equipment by means of sensors and sends all data wirelessly to the cloud through “smart” data collection hubs, while it populates the system with detailed maintenance data.

The sensors built in the equipment collect data from the power generators, the pumps, the fans, the electric systems (batteries, UPSs) and the transformers that exist in every tunnel.  

This is a comprehensive equipment monitoring solution that uses artificial intelligence and machine learning algorithms; this solution will be gradually rolled out in all the tunnels of the motorway. 

The “Smart Tunnel” aims at better planning and implementing the infrastructure maintenance campaigns, using the new tools offered by the Internet of Things. Moreover, the system will also contribute to increase the equipment lifetime, to improve the safety and the service levels, as well as to make considerable tunnel maintenance cost savings. 

Olympia Odos strongly invests in a modern exploitation model and in improving the infrastructure maintenance methods, such as the “Smart Tunnel” program which constitutes a worldwide innovation standard.  

The SMART TUNNEL system has been designed by Olympia Odos and implemented by the companies ES SYSTEMS, EX MACHINA and DELPHIS.



Olympia Odos is the Elefsina- Korinthos- Patra modern motorway, a total of 202 km, complying with the European standards that connects the Peloponnese with the rest of Greece and Europe. Olympia Odos is a 30-year concession project consisting of the design, construction, maintenance and operation. The motorway offers an upgraded and safe connection to the western part of Greece and in particular to and from the Port of Patras. The mission of Olympia Odos is to ensure comfortable and safe trips to all travelers and to provide high quality services 24 hours a day, 365 days a year.


ES SYSTEMS is a developer and manufacturer of high precision sensors focusing on applications in medical, industrial, hvac & aerospace markets. It is the only company in Greece that develops and manufactures high quality microelectromechanical sensors (MEMS) based on microelectronics technology. Recently ES SYSTEMS has also entered the Internet of Things (IoT) field by developing comprehensive solutions including sensors, data collection nodes and wireless transmission data in the cloud. More at: www.esenssys.com


Ex Machina (EXM) was founded in 2015 to solve challenging problems using its expertise in Internet of Things (IoT), Big Data and Machine Learning technologies. The company has been offering award-winning solutions to some of Greece’s largest and most prestigious companies. More information about the company can be found here - www.exm.gr


DELPHIS is one of the most progressive engineering companies in Greece, in the areas of air-conditioning, refrigeration and specialized services for facility management. Focused on high technology, innovation and excellence in services, DELPHIS offers optimized solutions for every customer. For more information visit www.delphisgroup.gr