Watch and Learn: Multiple No-Nos Leading to a Crash [Video]
First of all, it's the classic scenario, the textbook example with the rider passing the cars on the right side, and ignoring the traffic ahead. This is one of the most common mistakes fresh riders make: they are so preoccupied with going straight without touching the cars or going off the road, that they are no longer analyzing the traffic around them.
Failing to analyze why have the cars stopped and thus unaware of the (so obvious) incoming vehicle turning left, there is only one more way to avoid collision: stopping in time. But, with no finger on the brake lever, it takes way too much to slow down in time, so "crack!" goes the Ninja fairing.
We still meet riders who seem not to understand how valuable are a couple of fractions of a second, but we hope watching this video will illuminate them. For more info on how to brake when riding a motorbike, beginners could check this instructional guide, and maybe they'll be spared the inconvenience of a crash in the future.