In some countries (for example the United Kingdom) speed limit signs are valid until they are either superseded by another speed limit sign or some kind of speed limit end sign. Let's call these countries Type A.
In some other countries (for example Hungary) speed limit signs are also cancelled at any kind of junction. The logic here would be that cars coming from the other directions in the junction would not know what speed limit is in force on the road they are turning on (even if it's straight). Let's call these countries Type B.
Here are some examples how speed limits would be signposted in a Type A country:
Here are how the same road conditions would be signposted in a Type B country:
(red means the part of the road where the lower limit is enforced assuming the national/regional speed limit is higher than 60 units at that place)
While both approaches have their own advantages and disadvantages, obviously driving with the wrong mindset can mean you will either drive too slow, or more dangerously: too fast (as happened to me a few times, as I got my driving licence from a Type B country).
From my travels it seemed that Type A is much more prevalent, and actually I couldn't yet find a single other country than Hungary where Type B is the law. I tried to check some sites that contain notes on driving abroad (for example Europa.EU), but none of them seem to mention whether junctions act as speed limit derestrictions or not.
My question is which are the countries in Europe using Type B like laws?