In San Diego (Border Div), the beat numbers do not include the freeway numbers. They start with beat 1 at the border and get higher as they move north or east. (1 starts at the San Ysidro crossing.) They also use area beat numbers for the unincorporated areas that they cover, and the 80-90s are "rural residential" officers in the mountain and desert areas. Border also uses "Nora" for a 2nd motor unit on a beat, and generally unspoken, A, B or C for the shift designator.