This may or may not answer your question. These codes are in reference to vehicles which I would assume means motorcycles as well. This is for the State of Michigan:
General Traffic Safety Related Frequently Asked Questions
Question: Is there a Law regarding at what age and or weight a child should be before they can ride in the front seat?
Answer: Children of any age and weight can ride in the front seat - there is no law that prohibits them from doing so.
The law states a child up to the age of 4 must be in a child safety seat, and after age 4 must be secured in a properly adjusted and fastened safety belt while riding in the front seat. Safety belts are not necessarily the most appropriate restraint for a 4 year old. They were made to protect adults in a traffic crash. According to a study conducted by the National Highway Traffic Safety Administration, children do not fit three-point belts properly until they are 148 cm or 54" tall (4.5'), have a sitting height of 30" (2.5') and weigh 37 kg or 80 pounds. The average size child who is 4.5' and 80 pounds is between 10 and 11.
The American Academy of Pediatrics recommends children under the age of 12 ride in the rear seat if the vehicle has a passenger side air bag. If the vehicle were involved in a crash and the air bag activated, a child sitting either too close to the dashboard or riding unrestrained could be seriously injured.
Question: I have a 5 month old that has outgrown his infant car seat, he weighs 20 pounds. Can he be placed in a convertible car seat facing forward?
Answer: It is VERY important that an infant stay rear-facing until at least age one and 20 pounds. The vertebrae in a child's neck are not completely developed until age one. Infants have large, heavy heads on a "weak" stem (neck). That is why infants face the rear of the vehicle - so that their entire body will take the force in a crash. If you turn them around to face forward too soon, their large heavy heads are thrown forward (just as adults would experience) which presents a very high risk of a brain injury, broken neck, spinal cord damage, etc. Your infant should remain rear-facing in a convertible seat until at least age one. You should look for a convertible model that goes rear-facing to at least 30 lbs. Be sure to check the manufacturer's directions on the seat.
Question: Where can I find a list of technicians that can make sure my child safety seat is properly installed?
Answer: The National Highway Traffic Safety Administration maintains the list of all certified child passenger safety technicians.
Question: How can I find a list of recalls for my car or child safety seat?
Answer: The National Highway Traffic Safety Administration maintains the list of all recalls. You can also register your child safety seat, so the manufacturer can automatically contact you if there is a recall for your child�s seat. If your car is registered with the Michigan Secretary of State, and a part on your car is recalled, the car manufacturer will contact you through the Michigan Secretary of State�s list of registered vehicles.
Question: I want to find the crash test rating of my car (or a car I would like to purchase). Where is the list?
Answer: The National Highway Traffic Safety Administration maintains the list of crash test results as well as the Insurance Institute for Highway Safety.
Question: Where can I report a safety-related defect in my car or my child�s car seat?
Answer: Call the United States Department of Transportation�s Auto Safety Hotline at (888) DASH-2-DOT or visit the National Highway Traffic Safety Administration�s website. Question: Where can I find traffic safety public information materials (posters, brochures, flyers, etc.)?
Answer: The Michigan Office of Highway Safety Planning contracts with the Michigan Resource Center to house, distribute and mail all of their materials. Their telephone number is (800) 626-4636.
Question: My child is about to enter driver�s training and I would like to find out more about the graduated driver licensing system in Michigan. Where can I get information?
Answer: The Michigan Office of Highway Safety Planning, along with the Michigan Secretary of State, has put together a guidebook ("Graduated Driver Licensing: A Guide for Parents") on the new graduated driver licensing system. It is available at the Michigan Resource Center by calling (800) 626-4636.
Question: Where is the list of motorcycle helmet laws and approved helmets for Michigan riders?
Answer: The Michigan Department of State Police has been given the legislative responsibility to approve crash helmets and to promulgate rules to implement this law.
Traffic Related Frequently Asked Questions
TINTED WINDOWS
Question: Can I have tinted windows on my vehicle?
Answer: The law that covers window applications is MCL 257.709. The use of tinting is limited to the rear side windows, the rear window if the vehicle has outside mirrors on both sides, and the top 4 inches of the front side windows. There is a limited exception for medical necessity with a doctor's prescription, which allows for tinting to be applied to the front side windows as well. Michigan does not have a specification for the darkness of the window application, but does prohibit applications with a solar reflectivity greater than 35%.
Question: If I have a signed letter by my doctor indicating a medical necessity for tinted windows can another person drive my vehicle if the windows are tinted?
Answer: MCL 257.709(3)(e) allows for front side window tinting with "...a letter signed by a physician or optometrist, indicating that the special window treatment or application is a medical necessity. However, the special window treatment or application shall not interfere with or obstruct the driver's clear vision of the highway or an intersecting highway." A vehicle equipped with such tinting could not legally be driven by a person other than the person to whom the letter was given.
EQUIPMENT AND LIGHTING
Question: Are neon license plate frames legal?
Answer: You may equip your vehicle with a license plate frame that contains neon lights however they must be covered and unlit while on the roadway or within the public right-of way. In addition the frame cannot obstruct any of the registration information on the plate or tabs.
Question: Can I have neon underbody lighting on my vehicle?
Answer: MCL 257.698(4) prohibits equipping a vehicle with any lighting that is not expressly required or permitted by Chapter 6, unless both covered and unlit. Neon underbody lighting is neither expressly required nor permitted. If equipped, the lights must be unlit and covered while on a highway, which includes all public roads and the adjacent rights-of-way.
Question: I am considering equipping my vehicle with neon valve stem lights. Are they legal?
Answer: If installed on a vehicle, the lights must be both covered and unlit while on a highway (any public road, including the right-of-way). This prohibition includes, but is not limited to: windshield wiper lights, tire valve stem lights, overhead/roll bar lights, underbody lights, and interior after-market lighting if visible from outside of the vehicle.
Question: Are smoked-out headlight covers legal?
Answer: The Michigan Vehicle Code requires head lamps to emit a white light, with "high-beams" of intensity to reveal persons and vehicles at a distance of at least 350 feet ahead, and low-beams of intensity to reveal persons and vehicles at a distance of at least 100 feet ahead. Since smoked headlamp covers change the color of light, and/or decrease their intensity below the requirements, they should not be used when headlamps are required to be on. However, smoked headlamp covers may be used when headlamps are not on, and not required.
