What is the law that says you must submit to a test for the presence of alcohol or drugs?

in the state of Florida, when you get your license, you have to sign papers before they hand you your license that you agree to take any and all alcohol tests they may want to give you in a traffic stop.. in the state of florida, when you get your license, you have to sign papers before they hand you your license that you agree to take any and all alcohol tests they may want to give you in a traffic stop..