Maybe, but not automatically. Under Florida’s negligence per se principles, if you can prove that the defendant was breaking a safety law (texting while driving, for example), then the court will consider the defendant automatically negligent. This alone is not enough to win the case for you, however – you must also prove that the defendant’s negligence was a substantial cause of the accident. You might fail to establish this if, for example, you proved that the defendant was driving on an expired driver’s license but could not establish that driving on an expired license caused the accident to occur.