symbol usage has thus been redefined to indicate a variant rush-hour express service running simultaneously with a local service in the same direction. Special services Special is a signifier for a train that is running along a nonstandard route. It is sometimes used for special holiday trains, baseball game service, or for emergency or custom routes. Most trains have a "Special" option on the rollsigns or LCD/LED displays. Colors and trunk lines Each service is also assigned a color. Since 1979, each service's color corresponds to the line a service primarily uses in Midtown Manhattan. In the case of the BMT Nassau Street Line and BMT Canarsie Line, the color corresponds to the line used within Lower Manhattan, and in the case of the IND Crosstown Line (which never enters Manhattan), the color is . This is defined as the trunk line. All shuttle services are . The list of trunk lines and colors is shown in the following table. Station names Stations usually bear street names, but may also be named after neighborhoods or prominent locations (e.g., "Brighton Beach" for Brighton Beach; "Cypress Hills" for Cypress Hills, Brooklyn) or combinations of these (e.g., "Times Square–42nd Street" for Times Square and 42nd Street; "Astoria–Ditmars Boulevard" for Astoria and Ditmars Boulevard), especially at line terminals. Others are named after major destinations, either along with the street names (e.g., "68th Street–Hunter College" for Hunter College, "81st Street–Museum of Natural History" for American Museum of Natural History) or in some cases without (e.g., "Pelham Bay Park" for Pelham Bay Park, "Borough Hall" for Brooklyn Borough Hall). Of the system's stations, more than 300 are named after streets or street intersections alone, while the remainder are identified by different combinations of streets, neighborhoods and landmarks. Many stations share names, so to uniquely identify a station, the line name or cross street must be specified: for example, there are three stations named Kings Highway in Brooklyn. Usually, identifying the service is also sufficient (e.g., "Kings Highway on the B and Q" to denote the station at East 16th Street), but as services are transient, this is not a permanent label. The MTA has looked at certain station names as a source of revenue. In June 2009, the Atlantic Avenue/Pacific Street station in Brooklyn was renamed Atlantic Avenue–Barclays Center following a deal with Forest City Ratner who pay $200,000 per year for the rights to the