If you arrive at a T-junction, the road that you are on joins at right angles to another road, so that you haveto turn either left or right to continue.
[British]
T-junction in British English
noun
a road junction in which one road joins another at right angles but does not cross it
Examples of 'T-junction' in a sentence
T-junction
Behind me the corridor formed a T-junction, with wards in either direction.
Pritchard, John NIGHT SISTERS
He backed out, turned, drove on to the road and turned left to go down to the T-junction.