We are on our way to Romania via Czech Republic & Hungary. For no particular reason, while at the campsite in Prague I thought I'd just refresh my understanding of the rules for Tolls in Hungary for over 3.5 tonnes - last year the motorways required a 'GO BOX' (or whatever they call them) and non-motorway was free of tolls.
The website says that new arrangements were made in Jan 2015, so I went to the map and was horrified to see that just about every
main road in the country is now subject to tolls - Go Box for over 3.5 tonnes, vignette for below 3.5t.
It is also possible for > 3.5t to purchase a one trip ticket for a trip, but you have to say exactly where you're going and complete your trip by 24.00 the day after purchase - not much use for a motorhomer! There are plenty of garages 'selling tolls', if you did want to decide on a day-to-day basis, but even for us, planning to cross Hungary into Romania, we don't know how long the journey will take us till we do it!
I called their customer service number, and it was all confirmed by a helpful man who spoke good English.
The main roads are not expensive - only 5 pence/km [motorways about 2.5 times as much], so the cost is not a dealbreaker, but it does mean that if you want to roam around and decide as you go, a Go Box is essential for >3.5t.
We'll be there in a few days after a chill out day or two at a site in southern Czech [10 euros on ACSI
] by an artificial lake - [forecast is 23 deg for tomorrow]
I'll post on here how we get on with the tolls - hopefully it will be as straightforward as Poland