Active Buses in each series assigned to all four garages - Ross (Div. 10), Collier (Div. 24), West Mifflin (Div. 46) and East Liberty (Div. 56) - unless otherwise noted. Fleet Number(s) Thumbnail Build Date Manufacturer Model Engine Transmission Notes 1701-1730 2015 Gillig Low Floor 35' (G27B102N4) Cummins ISL9 Voith D864.6 Assigned to Ross and Collier garages 3101-3125 2005 Neoplan USA AN460 Detroit Diesel Series 60 EGR Allison B500R Assigned to Ross and East Liberty garages; used almost exclusively on peak hour trips Retirement began in 2017. 3 units remain in service as of early 2019. 3200-3260 2011 NFI D60LFR Cummins ISL9 Voith D864.5 3301-3340 2013 NFI D60LFR Cummins ISL9 Voith D864.5 [1] Assigned to Collier, West Mifflin and East Liberty garages 3401-3425 2017 NFI XD60 Cummins L9 Voith D864.6 Assigned to Ross and East Liberty garages. Includes options of 75 buses over the next 5 years. [2] 5201-5365 2003 Gillig Low Floor 40'