Access the DMV.org database and select your state from the list at the bottom of the page. Search for possible motorcycle windshield requirements, using the search field in the top right portion of the page. You may also visit your state's website.
Call your motorcycle's manufacturer and ask about buying an add-on windshield. Motorcycle manufacturers sell matching add-on windshields, which are guaranteed to properly fit your particular bike model.
Measure the height of the intended windshield space, and select the appropriate size windshield for your motorcycle. Your windshield should allow you to see over the top while sitting down. Contact your manufacturer for specific sizing recommendations if necessary.
Install a slightly tinted windshield. Dark-colored tinting causes reduced visibility while driving, and very light-colored tinting allows too much sunlight exposure, which can cause blinding conditions.
Install a thick windshield. A thin windshield can easily crack from stones, heavy wind and road debris. Read the windshield specifications concerning thickness and protection. Refer to your state's requirements regarding motorcycle windshield thickness.