We have a few bike lanes around but they are only on one side of the street. The other day when DH and I were out riding, we rode down one of the streets that has them, and then back again. On the return trip, DH was riding in the bike lane, but against traffic. I told him I thought that was wrong (I was riding across the street, with traffic, but not in the bike lane) and he said basically that "it's the bike lane" and he felt he was supposed to be in it even though he was riding against traffic at that point.

I've looked through my state's rules of the road for bikes and done a search for Illinois bike lane rules and can't really find any info. What is the proper bike lane usage in this case?

Thanks.