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Gareth LewisWales political editor
Huw Fairclough/Getty Images
Rhun ap Iorwerth has said he wants a "roads-based solution" to congestion on the M4 near the Brynglas Tunnels in Newport
An M4 relief road and potential for a third Menai crossing have revved their way back on to the political agenda.
The first minister said "something has to be done" - but it is still not exactly clear what solutions the new Plaid Cymru Welsh government will put forward.
Rhun ap Iorwerth does not have a majority in the Senedd, so he'll need to get other parties on board when his government makes up its mind.
There are a whole range of options the recently-elected first minister could take - but so far he has committed to none of them.
But he has ruled out a handbrake turn to revisit the so-called black route relief road, the proposal for a full-scale motorway across the Gwent Levels which was scrapped in 2019 by the previous Labour government.
The issues that were facing that plan then are still around today.
The Gwent Levels is still subject to environmental protections, and by some estimates the original £1.6bn price tag could have ballooned to £2.5bn – the equivalent of almost the entire Welsh government capital budget.
So what might happen instead?
Plaid wants a long-term "legacy" solution to the problems, but will have to do a deal with parties to get any solution through the Senedd.
Previous work which has already looked at two of Wales' most notorious transport headaches is likely to be dusted down - voters are unlikely to tolerate a re-invention of the wheel and its accompanying expense.
IWA/CILT
Old proposals for a relief road included colour-coded black, blue, red and purple routes, with the yellow line marking the railway
Could this mean road improvements to the A48 which runs through the south of Newport? Tolls on the M4? More buses and dedicated lanes especially for local journeys?
Is there any scope to speed up the delivery of new stations along the south Wales mainline, the first of which aren't projected to get underway until 2029?
The latter would involve discussions with the UK government, which would fit into Plaid's campaign message that it would stand up for Wales.
All this comes as we await a report into the "resilience" of the M4, A55 and A494 – Wales' busiest trunk roads.
It was commissioned last summer by previous Labour transport secretary Ken Skates, to "inform future investment decisions".
One question for Plaid is whether other parties will stay in their particular lanes or whether they might be tempted to move behind what it ends up proposing.
Reform looks like an unlikely partner and Labour appears to want to focus on rail links.
The Conservatives might have left a door ajar in saying that whatever is proposed should stick as "closely as possible" to the original plans, rejected seven years ago.
Meanwhile, the Greens do not think building new roads is ever the answer.
At some point what happens next is down to the new first minister.
"Something has to be done" will only carry him so far, when he is now the one who makes the decisions.
Bringing up both the M4 and the Menai Strait so early in his tenure suggests that these are priorities, but with that comes the pressure to decide and then deliver effectively.
The two roads warranted just a sentence in Plaid's election manifesto, just like a new 20mph law in Labour's plans in 2021.
Traffic, congestion, cars, buses, trains and transport are all things that get voters going.
By revving the engine after just two weeks, ap Iorwerth has created an expectation that he'll complete a journey that others have failed to make.
