Lights and clothing help reduce problems with motorist who have no intention of knocking you off but either are not paying enough attention to what they are doing, distracted by other things on the road or poor eyesight(apparently 20% of drivers who do not wear corrective glasses need to wear corrective glasses).
My tactic is "confusion", my rear flashers are a Dinotte 400R and two banks of 12v red strobe LED's(meant for emergency vehicles), located, at just below saddle height, either side of my pannier rack giving me a wide rear light profile. Plus on each front fork a 12v HID strobe light, white light forward and red to the rear. Makes me stand out in traffic and confuses drivers as to what I am.
Unfortunately there are some drivers who just do not care unless you have "Police" written across your jacket and blue lights.