the driver's handbook

Turning at an intersection crashes
Half of all crashes occur at intersections. The main cause of these
crashes is lack of experience and judgement in selecting safe gaps
in streams of moving traffic. It is much better to wait for gaps in
moving traffic that are larger, regardless of any impatient driver
behind you.
A learner driver should gain plenty of practice under the supervision
of an experienced licensed driver at selecting safe gaps in traffic
when entering or leaving a busy road.
Crashes when changing lanes and when
merging or diverging
Crashes can occur if a driver fails to check side mirrors and blind
spots (by looking over their right or left shoulder). However, some
drivers often forget blind spot checks or believe that a check is not
required when changing lanes, merging or diverging, which can lead
to a crash or a near-miss incident.
Head-on crashes
Head-on crashes on country roads can have devastating results.
Young or new drivers in particular can lack experience in overtaking,
and judgement at selecting safe gaps in the on-coming traffic
where they can overtake. To reduce the risk of a crash, it is better
to choose larger gaps in the on-coming traffic or wait until an
overtaking lane becomes available, or not overtake at all.
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The Driver’s Handbook 11