Yes, and it never seems to be enough!

1. I try to wear bright tops.. orange, red, yellow, etc.

2. I've got two of these lights on the back on my bike that stay on whenever I'm out (one flashing and one solid on left seat stay and bike bag)

3. This safety triangle that I wear on my back side at dusk, dawn, and in the dark.

4. A headlight similar to this that only gets used in low light or dark conditions

5. handlebar end led lights that only get used in low like or dark conditions.

6. reflective striping on my helmet and seat stays

7. Make eye contact whenever possible! If you haven't...and even if you have, ride like you're invisible.

8. Obey all traffic laws, take lanes when necessary, don't get bullied into the gutters or edges of the road, where you're even less visible.

...unfortunely all this effort, and I still get close calls practically everyday where people just aren't paying attention, don't care and are intentionally dangerous, or just don't realize how dangerous it is to drive the way they do around cyclists.