It has been a busy year for states considering transportation revenue options. Maryland, Massachusetts, Pennsylvania, Vermont, Virginia and Wyoming all approved significant transportation investment packages this year. Several more set in motion plans that could come to fruition next year. But a variety of factors could mean we’ll see even more activity on the transportation revenue front in state capitals in 2014. There are states with unfinished business from 2013, states with recommended actions on the table that could ripen into legislation, states where diverse coalitions are pushing investment and even states that have had recent transportation funding success but that are still seeking more sustainable solutions for the future. Success for those states in 2014 is far from assured, especially given the number of governors and legislators up for re-election. But factors like continuing uncertainty at the federal level, infrastructure needs coming into sharp focus and the realization that fixing the infrastructure in the near term will be far less expensive than putting it off for another day could mean another busy year for state transportation funding efforts. Here’s my annual rundown of states to keep an eye on next year.