I found this list from CycleFish - Note source is 2006. I will be checking on any changes so do NOT take this list as last word - check out links above.
Florida Motorcycle Laws - View All States Motorcycle Laws
We have put together a simple list of the primary Florida state motorcycle laws to help you when traveling through Florida on a motorcycle. These Florida motorcycle laws where confirmed accurate as of the time of publishing and are provided to you as a reference only. For Florida's complete motorcycle laws, please visit the Florida state Motor Vehicle website.
Safety Helmet: Not required over 21 with a minimum of $10,000 in medical insurance
Eye Protection: Required by law
Passenger Age: No Restrictions Children MUST wear a helmet
Helmet Speakers: No earphones allowed. Helmet speakers are allowed.
Mirrors: One required by law
Headlight: Daytime headlight required by law. Modulating headlight permitted.
Turn Signals: Not Required Believe this HAS changed
Handlebars: No higher than top of shoulders of the operator when seated upon the motorcycle.
Muffler: No person shall modify the exhaust system of a motor vehicle or any other noise-abatement device of a motor vehicle operated or to be operated upon the highways of this state in such a manner that the noise emitted by the motor vehicle is above that emitted by the vehicle as originally manufactured. (b) No person shall operate a motor vehicle upon the highways of the state with an exhaust system or noise-abatement device so modified.
Noise Restrictions: Maximum allowable A-weighted sound levels based on measurements taken at a distance of 50 feet from center line of travel (Sec. 316.293): 1) Manufactured before 1/1/79--82dBA (35mph or less); 86dBA (over 35mph) 2)Manufactured after 1/1/79--78dBA(35mph or less); 82dBA(over 35mph).
Riding Two Abreast in Lane: Operating motorcycles on roadways laned for traffic.-- (1) All motorcycles are entitled to full use of a lane and no motor vehicle shall be driven in such manner as to deprive any motorcycle of the full use of a lane. This subsection shall not apply to motorcycles operated two abreast in a single lane.
Lane Splitting: The operator of a motorcycle shall not overtake and pass in the same lane occupied by the vehicle being overtaken. (3) No person shall operate a motorcycle between lanes of traffic or between adjacent lines or rows of vehicles.
Insurance: FINANCIAL RESPONSIBILITY LAW-IT DOES APPLY TO MOTORCYCLES! Florida's No-Fault, or "PIP Law" does not apply to motorcycles. HOWEVER, the Financial Responsibility FR Law applies to ALL motor vehicles in Florida, including motorcycles. Thus the voluntary purchase of motor vehicle liability insurance by an owner, operator or owner/ operator is highly recommended. Failure to carry property damage and bodily injury liability insurance in case of a crash, DUI conviction or other occurrences outlined in Florida's FR Law, Ch. 324, may result in some or all of the following: Loss of license/tag and registration, and/or restitution or civil court judgment, and future proof (three years) of high risk, SR22 mandatory liability insurance coverage just to keep your driver license - even if you do not own any motor vehicles.
Source: Florida Motorcycle Handbook 2006
SOME ADDITIONS
Vertical License Tags: Was was allowed but needed a transporter (SunPass) present. This should be elimated by end of 2012 session
Riding in HOV lanes: Motorcycles with single rider are allowed
