Also, consider evasive action rather than immediately braking. If the driver is turning left in front of you, a hard right turn may be more effective than stopping. Best case is you give yourself enough space to avoid contact while keeping moving. Worse, but survivable is by changing vectors if there is contact, it will be glancing rather than head on.
This assumes good pavement, good tires, good bike handling skills, and a clear escape route (which you should always be looking for). It's an option; it may not always be available, but be aware of it.