| Structural & Electro-Mechanical measures | Operational measures |
Decreasing of accident frequency | Number of tubes and lanes, geometry (lane width, slope, emergency lane etc.), lay-bys | Transportation of dangerous goods (time windows, platoon, escorting), speed limits, overtaking, safe driving distances |
Decreasing of accident consequences | Emergency exits (design & intervals), drainage system, emergency stations, water supply, emergency lighting, ventilation, CCTV, communication (radiofrequency, loudspeakers). | Emergency response plans, activity of the control center, closure time & method, training, periodic exercises, information campaigns, safe congestion distances (5 m) |