This is good advice. If you can get over the very high dork quotient, a high visibility vest is a great idea. I use this $8 one: http://www.amazon.com/Neiko-Visibili...isibility+vest.

If you know you won't be riding in the dark, then you can get fairly inexpensive blinky lights like this $14 set: http://www.amazon.com/dp/B000QSXMME/...I33LNBXZUY6GQO. If you will be riding in the dark, then you'll want a high quality LED headlight and tail light. People who know more than I do about these matters will have to advise on you that.