Attiki Odos is considered one of the safest motorways in Europe. It was designed under strict safety-related technical specifications, including updated hard shoulders in either direction and high quality skid-resistant asphalt pavement, dense lighting and fencing. Other sophisticated safety systems include:

• Road pavement sensors
• Carbon monoxide measurement systems installed in tunnels
• TETRA system for communication with the patrol units
• Electronic variable message signs
• Automatic tunnel ventilation systems