We just got these maps for our France tour [IGN 1:100,000]
Planning our first leg from Bordeaux to Lacunnae and most of the cycling is on a purple road, which is marked in the map as a 'Main' road but not a motorway. Is cycling allowed/safe/fun on a road like this? Thereafter most of the trip will be on yellow marked roads on the map. In Google maps, the purple of the IGN maps is marked as yellow. Here is a pic of our first leg:
What do most people follow when touring in France?