there are 24 train services. this includes 3 short "shuttle" routes. each route has a color. r. raleigh d'adamo, a lawyer who entered a contest in 1964, planned the colors that are used on subway maps now. before, subway maps used different colors for every route. people who live in new york city do not call lines and services by color (such as, blue line or green line). however, tourists often use colors to tell between routes.