The magazine tested 22 tunnels in towns and cities, checking how safe it was to stop in lay-bys, how easy it was to contact security staff and if it was possible to leave a tunnel if necessary.
In half the tunnels the journalist for Auto Plus found it difficult to contact emergency services through SOS terminals at the roadside, mobile phone reception wasn't always possible either.
A third of tunnels lacked safe areas to stop with no emergency lanes or walkways, while in a fifth it was difficult to evacuate the tunnel, with exit doors locked and corridors unlit.
In reply to the Auto Plus article, the French minister responsible for transport, Frédéric Cuvillier, said he would launch an immediate verification programme into the security measures in the tunnels.
The security of long distance tunnels in France was particularly heightened after the death of 39 people in the Mont Blanc tunnel in March 1999 following a lorry fire.