Unfortunately the vehicle must come to a COMPLETE stop. That means stopping before the line, applying the handbrake for a second (or 2, just to be sure), then treating the intersection as a "give way". Done too many driving tests (military especially) where thats an instant fail.
They disappear after 3 years of the date of offence
If you've got 6 accrued (half) you'll get a "you're well on your way to losing your licence" letter that will show up what you've gained LOL