Hi Wanderer, seem to have lost the last part of your posting but I guess you were going to say something like 'you can use them to save time'.
Absolutely right and thanks for the tip. The right hand lanes are marked for HGV but not exclusively and I am told by SANEF that you cannot be charged more than Class 2 with the LiberT tag.
We certainly enjjoyed not having to stop and fumble with tickets, money cards etc. on recent trip down into spain from Caen in the very high winds and driving rain, plus the right hand lane is quite a lot wider.