How do you call the intersection with barrier and you can always right turn?

Question

In the photo above I can name the first 3 intersection

a) Regular intersection

b) T intersection

c) Skewed intersection

I am having a hard time on identifying the fourth intersection, what do you call that one?

Answer 1

In UK terminology, your separate turning lane would be called a "filter lane" ( see e.g. Collins dictionary definition). This definition doesn't mean that you can always turn in that lane, it means that this lane is exclusively for turning; traffic in it may or may not have to wait for a green light.

I might therefore be tempted to call it a "crossroads with filter lanes". (I would call your situation a a "crossroads" rather than a "regular intersection". But then I'd also use the word "junction" rather than "intersection"...

Answer 2

This is probably an example of a channelized intersection, where you have right turn bays that split from the main road just before the intersection:

References:

Individual Movement Treatments - FHWA