"To follow the signs" means to pay attention to or obey the directions and indications that are given, usually in the form of signs or signals, in order to reach a desired destination or achieve a specific goal. Full definition
Some landlords will require a tenant to have proof of renters insurance before moving in, or immediately following the signing of the lease. (rentersinsurance.net)
Follow signs for car parks which are relatively inexpensive. (spain-grancanaria.com)
An elevator there goes to the 3rd floor - follow the signs on the 3rd floor to courtroom 3 - 2. (ccdonline.ca)