California Code, Public Utilities Code - PUC § 99602

(a) “CalTrain” means the commuter rail service operated along the San Francisco Peninsula commute corridor.

(b) “Commission” means the California Transportation Commission.

(c) “Commuter rail service” and its derivative terms have the same meaning as the term “commuter service” and its derivative terms, as defined in paragraph (9) of subsection (a) of Section 502 of Title 45 of the United States Code.

(d) “Department” means the Department of Transportation.

(e) “Exclusive public mass transit guideway” means a transit capital improvement included in the definition of this term as applied and used in 70 Op.Atty.Gen. 119 or a transit capital improvement for which motor vehicle fuel tax funds from the State Highway Account in the State Transportation Fund were actually allocated by the commission on or before January 1, 1989.

(f) “Fund” means the Clean Air and Transportation Improvement Fund created by Section 99610.

(g) “Grade separations” means grade separations for either passenger or freight rail services.

(h) “Intercity rail” and its derivative terms means passenger rail service between urban areas of the state.

(i) “Local agency” means a county, city, city and county, county transportation commission, county transportation authority, transit development board, transit district, or any joint powers agency specified in this part.

(j) “Rail project” means a commuter passenger rail service project, an intercity passenger rail project, or a rail transit project, and includes exclusive public mass transit guideway projects and the project described in Section 99624.

(k) “Rail transit” means a rail mass transportation operation usually within an urban area, generally characterized by more frequent service over shorter distances than normally provided by commuter rail service or intercity rail service, and operating on a rail line without any or with very limited rail freight service.

(l) “Right-of-way” means right-of-way for rail purposes, including separate right-of-way alignments adjacent to existing freight lines.