Yellow Light
Yellow means stop, if you can stop safely. If you're so close to the line that a hard brake would mean being rear-ended, keep going. Rule of thumb: if you're more than a car length from the line, you stop.
Traffic lights, pedestrian crossings and cycle passages

At a red light, stop at the stop line, or — if there's no line — before you enter the junction. The stop line isn't a finish line. A car that rolls over it on red is running the red, even if its wheels then stop.
Yellow means stop, if you can stop safely. If you're so close to the line that a hard brake would mean being rear-ended, keep going. Rule of thumb: if you're more than a car length from the line, you stop.
At an unsignalled pedestrian crossing, you must yield to people who have stepped out or are about to. At a cycle passage, you have priority as the crossing motorist. At a cycle crossing, the cyclist has priority — the sign tells you which is which.
If you stop at the line and can't see enough, creep forward until you can. You must have come to a full stop first. Rolling straight through without stopping is wrong, even with a blocked view.
At a stop sign, the order is always: stop, then look. Not the other way around. A 'rolling stop' isn't a stop — it's a violation.
A flashing yellow isn't a soft green. It means the signal is out of service or dimmed — priority is then decided by the signs and road markings on site.
You approach a red with a clear stop line. Your view to the left is blocked by a parked truck. Three steps: 1) Stop at the line. 2) Creep forward until you can see. 3) Yield to crossing traffic. Never skip step 1.