Search within This 18.3.8.030 Freeway Sign Overlay Regulations This section is included in your selections. The following regulations apply within the FS Overlay. 1. One freeway sign shall be permitted for each lot in addition to the signs allowed by chapter 18.4.7 Signs. 2. Signs shall not exceed an area of 100 square feet per sign. 3. Signs shall not exceed a height of 2,028 feet above mean sea level.