In this chapter, the following terms have the meanings indicated. Terms Defined. “Abandoned vehicle” has the meaning stated in Transportation Article, §25-201(b), Annotated Code of Maryland. "Authority" means the Maryland Transportation Authority. Authority Property. "Authority property" means property owned, leased, operated by or under the control of the Maryland Transportation Authority. "Authority property" includes: A transportation facilities project as defined in Transportation Article, §4-101, Annotated Code of Maryland; and An Authority highway as defined in Transportation Article, §21-1401, Annotated Code of Maryland. “Official sign” means a sign that conforms to the system set forth in the most recent edition of the Manual on Uniform Traffic Control Devices for Streets and Highways as defined in Transportation Article, §25-104, Annotated Code of Maryland. “Park”, “parking”, or “parked” has the meaning stated in Transportation Article, §11-144, Annotated Code of Maryland. “Police” means: A person designated as a member of the Maryland Transportation Authority Police Force under Transportation Article, §4-208, Annotated Code of Maryland; or A police officer as defined under Public Safety Article, §3-201(e), Annotated Code of Maryland. Unattended Vehicle. “Unattended vehicle” means a vehicle that: Is parked on Authority property other than in a designated area; and Has not been occupied or attended for a period of 12 or more hours. “Unattended vehicle” does not include an abandoned vehicle as defined under Transportation Article, §25-201, Annotated Code of Maryland. “Vehicle” has the meaning stated in Transportation Article, §11-176, Annotated Code of Maryland.