That road rash invites the following first aid article, which I saved from this very message board and repeat here (I'm sorry, I don't know the original author but it's very sound medical advice):
"Premium road rash kit
• Duoderm 4x4 Extra Thin CGF Dressing (ConvaTec/Bristol-Myers Squibb)
• Tegaderm
• Hibiclens
• Surgical scrub brushes
• 2% lidocaine jelly* (AstraZeneca)
• 4x4 gauzes
• White fishnet mesh-2 sizes to fit arm and leg
As a cyclist and a doctor, I am convinced that if there is a god he made these for road rash. Believe me, the manufacturer isn't paying me to say this.
Buy Duoderm and the fishnet mesh at a medical supply store. You're unlikely find them at the local drugstore. Duoderm is designed for chronically ill elderly people with non-healing diabetic wounds. It'll blow a little road rash on a healthy cyclist right out of the water.
In layman's terms Duoderm has magical physiological goo in the adhesive that makes a gel with your oozy wound secretions and accelerates wound healing. These patches make the deepest road rash go from throbbing weeping raw nerve endings to happy pink nearly completely healed skin in about a week. They completely bypass the scab and pain stage. It's like a fake layer of skin, so you don't feel more than a slight ache under your skinsuit or even lying in bed with your weight on it.
Some people get a slight skin allergy to the adhesive after a couple of days, but this is far outweighed by the benefits. Another downside is the cost. A box of 10 4x4 Duoderm patches costs about 50 bucks, and they don't sell them singly. But look, if you're out there plying the roads on a $4000 bike, it may be worth your while to spring a few bucks on this stuff.
The dressings stay in place for days under normal conditions, but in a stage race they may fall apart and need to be changed daily. Perhaps you and a friend can split a box, or your bike store or team manager can buy a box and sell them in singles.
Tegaderm is a thinner bioocclusive dressing that works well, but not nearly as well as Duoderm. If you are too cheap for Duoderm or Tegaderm, 4x4 cotton gauzes can be used for your dressing. Be sure to apply triple antibiotic ointment and petroleum so they don't stick. Skip the triple antibiotic cream and Vaseline if you are using Duoderm-you want the adhesive right up against your wound. 4x4 gauzes can also be taped strategically on your Duoderm because there will be some goo leakage from the dressing.
Two-percent lidocaine jelly is available by prescription. It's much stronger than the non-prescription variety. If you've lost a lot of skin, use it sparingly because there is a limit to how much lidocaine is safe. Again, show dope control your road rash if you are tested, document that you used the lidocaine and you should have no problems clearing dope control.
Shurclens is the best wound cleanser. It does the job without damaging the tissues. Please don't pour peroxide on your wound-it's too damaging and will delay wound healing. Hibiclens is the next best wound cleanser. Disposable surgical prep sponges with bristles on one side and a sponge on the other impregnated with sterilizing skin cleanser are nice, but don't scrub any harder than you need to get the gravel out."