Eight states—Georgia, Idaho, Iowa, Michigan, Nebraska, South Dakota, Utah and Washington—raised their gas taxes in 2015. Two other states—Kentucky and North Carolina—made adjustments to their gas tax mechanisms to make revenues more reliable. The state of Delaware meanwhile enacted legislation to raise several vehicle and license fees in order to fund road repair and maintenance. And states such as Maine and Texas approved ballot measures that will result in more money going to transportation. All that activity surpassed 2013 when six states produced major transportation revenue packages. But despite all that activity and despite the fact that 2015 could see Congress approve a new long-term federal transportation bill, 2016 also could see a large number of states join the club, particularly if many of those states that have come close in recent years or have had processes in place to examine revenue options end up moving forward. Here’s a roundup of the states to watch in transportation funding next year and some additional resources where you can read more.

As I wrote last week, Tuesday was a big Election Day for transportation in a number of places around the country. Statewide ballot measures, for example, won approval in Maine and Texas and local measures were approved in Seattle, two Colorado towns and a handful of Utah counties. But it wasn’t just at the ballot box that transportation was a focus of policy decisions. The U.S. House of Representatives worked their way toward passage of a long-term transportation bill. And Michigan lawmakers approved a long-in-the-works, $1.2 billion road funding bill that includes the eighth gas tax increase approved by a state this year. Here’s a roundup of transportation-related election results and updates on some of this week’s other key transportation developments.

While 2015 may be an off-year for elections in most states, it has the potential to be an important one for transportation in a variety of places. Here’s a roundup of how transportation is factoring into this year’s key state contests and ballot measures.

The city of Denver and state of Colorado have seen their share of transportation successes in recent years thanks in large measure to regional cooperation, federal investment, a 2004 tax increase, partnerships with the private sector and some innovative thinking. But the city and state face numerous challenges in the years ahead that will severely test the transportation system, notably a burgeoning population, stagnant federal investment and limits to increasing taxes at the state level. Those were some of the messages state and local officials delivered to a group of state legislators from eight states at the CSG West Transportation Forum last month in Denver.

The past year has seen the states of Florida, Indiana, Ohio and Pennsylvania close deals with the private sector to undertake some long-awaited transportation projects (the I-4 Ultimate, I-69, Portsmouth Bypass and Rapid Bridge Replacement Project respectively). But much of the talk at a recent conference on public-private partnerships (P3s for short) revolved around why the market for such projects remains sluggish in the United States.

Next month, state and federal officials and representatives of the private sector will converge on New York City for the InfraAmericas U.S. P3 Infrastructure Forum 2015, an annual conference assessing the state of public-private partnerships in infrastructure. In anticipation of that event, here’s a roundup of recent news on P3 projects around the country. I have items on when Maryland Gov. Larry Hogan might decide the fate of a P3 light rail project, why a new Cape Cod bridge might be closer to reality and why an Ohio bypass may cost more than originally advertised. Plus details on how you can register to attend the InfraAmericas forum to join the conversation on this important tool many state policymakers are turning to as they seek to meet the nation’s infrastructure needs.

Maryland Secretary of Transportation Pete Rahn was the keynote speaker at the opening dinner of the 2015 CSG Transportation Policy Academy in Washington, DC on May 11. Rahn, who was appointed by Governor Larry Hogan on January 21st of this year, is the first person to lead transportation departments in three different states—New Mexico, Missouri and now Maryland. In these excerpts of his remarks, Rahn touched on hot button topics like Hogan’s reassessment of two light rail projects in the state and recent decision to lower tolls on bridges and roadways in the name of tax relief. He also weighed in on how he thinks Congress might address expiring federal transportation program authorization and the dwindling Highway Trust Fund.

State lawmakers in Nebraska voted last week (May 14) to override the veto of Gov. Pete Ricketts and approve a six-cents-per-gallon gas tax increase. In doing so, Nebraska became the sixth state to approve a gas tax increase for transportation needs this year. That equals the number of states that moved major transportation funding packages in 2013, the most recent big year for such efforts. The news came during Infrastructure Week just as many participants were hearing that Congress is unlikely to follow suit anytime soon to shore up the dwindling Highway Trust Fund and provide any long-term certainty for state transportation officials.

As states ponder the future of transportation funding, tolling is playing an increasingly significant role. Tolls are helping states close funding gaps, support capital investment and improve mobility. Developments at the federal and state levels make the trend toward increased tolling likely to continue. But some states have seen pushback against the proliferation of tolls and Texas in particular could face a rocky road ahead as that state tries to deal with increased congestion due to population growth.

In this week’s issue of The Current State, CSG’s weekly e-newsletter, I write about the factors that allowed Georgia and Iowa to be successful this year in passing legislation to fund transportation. Georgia and Iowa are two of the five states that have passed major funding measures so far this year. Iowa Senate Transportation Committee Chairman Tod Bowman and Georgia House Transportation Committee Chairman Jay Roberts told me that gubernatorial leadership, uncertainty about what’s going to happen at the federal level and the lessons of past failures all played a role in their 2015 success. In this unused portion of my interviews with the lawmakers, they also suggest an inclusive process helped pave the way to success. I also have items on Georgia’s new electric vehicle fees and South Dakota’s road to success as well as a look at some key meetings coming up this Spring.