Thks I'll download an extract to see how it behave.

About the conditional restrictions I tried to fiddle a bit yesterday trying different things. But I didn't manage to have at the same time, an accurate representation of the situation (time dependent closure of the road), and a routing that take account of it.
Reading Valhalla github its sure they have at least a partial implementation of conditional access, but I'm not sure if it doesn't work because we are in a non-implemented situation, or it's just me who didn't use conditional access syntax correctly