When riding your bicycle on the road you should use mirrors and when available use any items that improve your visibility such as lights and reflective hi-visibility clothing.
always scan ahead for conflict points and vehicles coming from them .
always scan behind you in mirror to observe vehicle behavior
are they changing lanes early?
do they appear aggressive?
Is there a platoon of vehicles behind you? if so, can you move over in safe area to allow them to pass?
do not move over if you will be unable to take full control of the lane again
be visible. ride bold.
communicate with drivers and thank those who pass you with respect.
ride with camera systems.
quick video on why you must always be prepared.
Despite having hi- visible clothing and flashing lights this bad driver pulled right out in front of me with ZERO traffic in either direction.