To date the only lane information we've tracked is the "number of lanes", which is an attribute for Canada's National Road Network but doesn't provide us with much value.
I am wondering how best to model lane information in a simple way. The short term suggestion has been to add a comment field to the feature class, and while keeping in mind the vast majority of our network is two lane highways with the occasional passing lane, I still see major issues at intersections where the records aren't currently split and inaccuracies over time if we stuck with it.
I'm considering a cross sectional position table with attributes for Lanes like L1/L2/L3/L4 with the type of lane in each, and the number of lanes can then be derived. At least this way new records don't outdate adjacent records.