In the event of a breakdown or emergency inside a tunnel, what is the preferred means of requesting assistance?

Question

DentroTest · Accepted Answer

Regulations state that inside tunnels or underpasses, the driver should preferably use the nearest SOS posts. The main reason is that these devices communicate directly with the tunnel control center and automatically provide the exact geolocation of the incident, allowing for immediate management of ventilation and signals. A personal mobile phone is a secondary alternative, as it may lack coverage or GPS accuracy inside. Warning must always be given, not just if there are injuries, as a stopped vehicle poses a serious risk.

In the event of a breakdown or emergency inside a tunnel, what is the preferred means of requesting assistance?

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