
Helmet laws vary from state to state; some require you to wear a helmet at all times, others will permit you to go al fresco and not wear a helmet as long as you are over the age of 21 and sign a medical exemption form that gets you a sticker (for $5.00) to be present on the bike you ride as proof that you signed said waiver.
Texas is one such state.
According to this law, an officer will not be able to stop you for the purpose of determining if you have proof of the waiver, or if you completed a safety course, etc. That is not to say that said officer cannot stop you if he or she observes you riding in a such a manner as to be in violation of one law or another.
Here is a link to the Department of Public Safety exemptions law which goes into effect September 1, 2009:
Motorcycle Helmet Exemptions
Texas Motorcycle Laws include pretty much all information pertaining to operating a motorcycle or moped. It is comprehensive, so make sure you have a fresh cup of coffee when you sit down to read through it.
If you prefer to read the entire Texas motorcycle laws offline, you may download them as a PDF - right-click this link and choose save as to save the PDF file to your desktop. You will need a pdf reader such as Adobe Acrobat, a free download, with which to read the file.
Remember, you do have a choice whether you will wear a helmet or not in Texas. And the controversy about wearing one is long and varied according to who it is you ask.
I will go as far as to say that the choice you make is one you will live by, or die by.
That may come across as harsh, but then again, it is your safety and your life after all.