Although there may not be a specific statute addressing lane splitting in a particular state what will likely happen is law enforcement will either interpret existing statutes to cite you for it or not, depending on what they are accustomed to doing in their jurisdiction or from their own experience. A motorcycle cop may overlook it, a township cop or a deputy may not. For instance consider a common circumstance where at a stoplight there is no right turn only lane, yet people go off onto the shoulder to get around stopped cars to do a right turn on red. If the shoulder is marked and has a sign stating "do not drive on marked shoulder" and you do it in front of a cop, you are getting ticketed. If it isn't marked, you probably will get away with it but if you cause an accident they could interpret any of a number of statutes to cite you with.