1-99 (Local Routes) Routes with numbers less than 100 are fixed routes that cover almost every city in Orange County. Buses operate on most major arterial streets. Route 1 is the only single-digit route, acquiring the number from
California State Route 1.
100s (Community Routes) Routes with numbers in the 100s descended from the old
RunAbout service that formerly served residential neighborhoods, or provide service to portions of 1-99 routes that have reduced demand. Three routes (129, 143, 153) were truncated from routes 29, 43, 47, 53, and 59 as a result of March 2010 service change; the 153 was later discontinued in February 2023. These routes are operated by Keolis, although between February 2022 and June 2023 OCTA temporarily operated many of these routes in-house except for the 129, 143, and 177, likely due to contractor driver shortages.
400s (StationLink) in
Irvine, California Routes with numbers in the 400s are "StationLink" routes which travel between
Metrolink stations and business districts. These routes operate only during weekday rush hours and do not operate reverse peak services. These routes are operated by Keolis.
500s (Rapid Routes) in
Anaheim, California Routes with numbers in the 500s are "Rapid" routes that operate on heavily used routes making limited stops and at transfer points to other routes. It is named according to the parent route it accompanies, for adding the number five to the beginning of the route indicating that it is a Rapid express route. Rapid routes use a dedicated fleet of buses and have different color schemes from regular route buses.
800s (City Shuttle) Routes with numbers in the 800s are City Shuttle routes. Route 862, the first and only 800 series route, serving as a circulator route in Downtown Santa Ana and was introduced in October 2019, replacing former StationLink Route 462. == Bus fleet ==