Small business
Small business means a business having not more than 500 employees working at the site being acquired or displaced by a program or project, which site is the location of economic activity. Sites occupied solely by outdoor advertising signs, displays, or devices do not qualify as a business for purposes of 24.303 or 24.304.
Source
49 CFR § 24.2
Scoping language
Definitions. Unless otherwise noted, the following terms used in this part shall be understood as defined in this section: