You should be able to see their tires from the drivers seat. That's how you know you're back far enough.
It should be ahead...Singapore is in the +8 GMT timezone whereas according to your question, Ireland is in the +1 GMT timezone.
The difference is that London is five hours ahead of Miami about 93% of the year
British Columbia is 3 hours behind Nova Scotia.
Spain is not behind England. Spain is an hour ahead of England.
Seattle, Washington is 3 hours behind Charlotte, North Carolina.
stay behind it.
Drive on ahead until you can get into the proper lane, then turn at another intersection
Reduce your speed slightly and observe traffic ahead before arriving at the intersection.
Clues that indicate an intersection ahead include road signs such as "Yield," "Stop," or "Intersection Ahead," as well as changes in road markings or the presence of cross traffic. Additionally, the sight of streetlights or traffic signals can be a strong indication of an upcoming intersection. Pay attention to the road's curvature and any decrease in speed limits, as these can also signal that you are approaching an intersection.
when its a "no passing zone" or "do not pass"sign posted never attempt to pass a car ahead of you.. ~On a curve. ~Near or at the crest of a hill. ~In an intersection
the sea raven is behind
Stop just before you enter the intersection.
The opposite of ahead is behind.
ahead
Be prepared for sudden stops by keeping a cushion between you and the vehicle ahead
Ahead
Ahead