Trucks have blind spots
Due to their size and length, trucks have larger blind spots than the average car. This means truck drivers may not be able to see you. So for everyone’s safety, be cautious when driving next to, or behind a truck – can they see you?
http://roadsafety.transport.nsw.gov.au/…/be-truc…/index.html
Be Safe, Leave Space
Trucks need more room to turn, change lanes and stop. By understanding that large trucks need more room to operate, and by taking a few extra precautions around trucks, passenger vehicle drivers can significantly reduce the risks of being involved in a serious crash.
Give trucks lots of space — don’t take away their turning or braking room.
Don’t merge too soon — when passing a truck, make sure you can see both its headlights in your rear-view mirror before merging back into the lane.