“Okay, so we’ve spotted the sign. We’ve spotted that it’s a warning triangle. This sign is showing a vertical black line, that’s us, that’s our road and there is a thinner minor road line, across to the right.
So we are approaching a junction to the right.
A different sign might show the junction to the left, so whatever it is. This sign, we’ve got a junction coming up ti the left, so we can anticipate traffic in front of us possibly wanting to go into that junction and, because of oncoming traffic, they may well have to stop right in front of us, so beware of that.
If we are wanting to turn right into that, we’ve got to give way to oncoming traffic and we’ve got to give way to pedestrians and anybody else at that junction.
So there’s a lot going on here, plenty of reasons to check your mirrors in case you have to slow down or change position.”