Don't kow the laws where you live, but some states do not allow modulating lights during driving.
A good alternative is to place "driving" lights (small led projectors) far enough below your headlight to create a larger sphere of light. Same is true for the trial light, perhaps small Amber running lights outside of the forks at the top of the shocks.
Sean is right too, no matter what you wear, distracted drivers will run into semi trucks. Ride where you can escape, constantly making eye contact with nearby drivers, and postion your bike in the best place possible.