You are driving on an A-road and see a triangular warning sign showing a plain cross where two roads of equal width meet directly opposite each other. A few miles later you see a different triangular warning sign showing two road lines joining at points that don't line up, with one of the two lines drawn noticeably thicker than the other. What is the key difference between the situations these two signs are warning you about?
- The first sign warns of a roundabout ahead where several roads merge in a circle; the second warns of a T-junction where a single side road joins from one direction only
- The first sign warns of a crossroads where the side roads meet the main road directly opposite one another; the second warns of a staggered junction where the side roads join at offset points, and the thicker of the two lines shows which road continues straight through the junction
- Both signs mean exactly the same hazard, an ordinary crossroads, and the varying line thickness on the second sign is simply a stylistic difference with no meaning for the driver
- The first sign warns that the crossroads ahead is controlled by traffic lights, while the second warns that the staggered junction ahead has no signs or markings of any kind
Why B? And why not the others?
Correct answer: B. The first sign warns of a crossroads where the side roads meet the main road directly opposite one another; the second warns of a staggered junction where the side roads join at offset points, and the thicker of the two lines shows which road continues straight through the junction
A plain cross drawn with two lines of equal thickness meeting at a single point is the crossroads warning sign, used where the side roads meet the main road directly opposite each other. A staggered junction sign instead shows the two side roads joining at offset points either side of the road, and it deliberately draws one line thicker than the other to show which road runs straight through the junction with the other joining it at an angle from each side in turn. This distinction matters because a driver's expectation of where a vehicle might emerge from differs between a direct crossing and an offset one. The option describing a roundabout and a T-junction misidentifies both symbols, since neither sign shows a circular roundabout layout or a single one-sided junction. The option claiming both signs show the same hazard ignores the real, deliberate difference in road layout and wrongly dismisses the thicker line as meaningless when it actually conveys priority information. The option linking the signs to traffic-light control or to a complete absence of markings invents details that these warning-sign symbols do not show at all; the signs describe road layout, not signal control or the presence of markings elsewhere.
Source: DfT Know Your Traffic Signs — Warning signs: Crossroads / Staggered junction (GOV.UK)