We, that is Roy my husband and me, Julie, own a self build Citroen Relay camper, H2 van. Last year, in our Transporter T6, we almost came unstuck outside Le Mans, when, during quite a storm, we found ourselves entering an underpass! We just got under but wouldn't in our current van. Can anyone tell me of other low underpasses or tunnels, eastern France as we are taking a trip to Annecy via Ypres, Verdon and Colmar?