verification . please help improve this article by adding citations to reliable sources . unsourced material may be challenged and removed . march 2009 learn how and when to remove this template message ic bus ic bus corporate logo type subsidiary of navistar international industry manufacturing transportation predecessor american transportation corporation amtran ward body works founded 2002 as ic corporation headquarters 2601 navistar dr lisle illinois 60532 number of locations 2 tulsa oklahoma assembly conway arkansas parts fabrication area served north america key people john mckinney president products school buses commercial buses transit buses parent navistar international website icbus.com ic bus originally ic corporation is an american bus manufacturer that produces yellow school buses and commercial use buses shuttle buses primarily for the united states and canada with limited exports outside of north america . headquartered in lisle illinois ic is a wholly owned subsidiary of navistar international . the company was established by navistar in 2002 through a reorganization of its subsidiary bus manufacturer american transportation corporation amtran . through amtran ic traces its roots back to the 1933 founding of ward body works in conway arkansas . the ic company name stands for integrated coach originally integrated chassis alluding to how the vehicles are nearly completely assembled under a single corporate structure . for all ic vehicles navistar produces the bus body chassis and engine . currently all ic bus vehicles are produced at its manufacturing facility in tulsa oklahoma ; since 2010 the former amtran ward manufacturing facility in conway arkansas has remained in use for fabrication and the production of parts . contents 1 history 1.1 2000s amtran to ic 1.2 2010s product adaptation 2 products 2.1 school commercial buses 2.1.1 forward advantage prototype 2.1.2 hybrid diesel electric buses 2.1.3 motorcoach prototypes 3 assembly 4 see also 5 references 6 external links history edit 2005 present ic ce 2000s amtran to ic edit 2002 ic re fairfax county public schools the transition of the bus manufacturing subsidiary of navistar began in 2000 as amtran introduced a new generation cowled chassis conventional . while still based upon the international 3800 and sharing much of the body with its amtran volunteer cs predecessor the new bus featured a redesigned drivers compartment and larger windshield . the new bus was given the international ic name ic standing for integrated coach chassis the model emphasized how the entire vehicle body chassis engine was produced under a single corporate entity . to distinguish the ic from other type c buses sharing the international 3800 chassis the ic was given its own grille and hood badging . after 2000 amtran corporation changed its name to international truck and bus bringing it in line with the truck manufacturing division of navistar then international truck and engine ; the amtran fe and amtran re model lines adopted the international brand name and badging . for 2003 international re branded its bus subsidiary to ic corporation . after a minor update the international ic was rebranded the ic ce series in line with the fe and re series buses . in the mid 2000s ic saw a number of changes . as navistar introduced its first all new cowled chassis since 1979 with the international 3300 a cowled chassis variant of the international 4300 durastar ic introduced a new generation ce series in 2005 . in 2006 the be series was a second ic bodied bus based on the 3300 ; although similar in configuration to the ce the flat floor low profile be was designed for users of smaller buses ; its highest capacity was 30 passengers . while the commercial products of ward amtran had been strictly derived from variants of their school bus bodies in 2006 ic launched two all new product ranges for commercial paratransit and shuttle bus customers . in addition to commercial variants of the be ce and re ic launched two cutaway cab product lines based on the international durastar . the hc series was a range of shuttle buses while the lc series was a low floor bus aimed at paratransit customers . in april 2009 ic corporation changed its name to ic bus . 2010s product adaptation edit 2010 marked a major transition of the ic product line . in a single year the company ended production of one of its highest capacity vehicles while making an introduction of its first small school bus . the fe series was removed from the ic product line as dealers announced its discontinuation in april and the company removed its product literature from the ic bus website . subsequently the only type d bus in the ic product line is the rear engine re series . the international terrastar class 4 5 truck formed the basis of two new model lines introduced by the company . the ac series was introduced as a commercial shuttle bus competing against van based buses while the ae series became the first cutaway cab school bus produced by the company since the discontinuation of the amtran vanguard in 1996 . in the mid 2010s ic bus underwent changes to stabilize its model line . to re emphasize the ties to its parent company ic bus modified its branding in 2013 adding the navistar script to its ic bus wing logo . to better focus on its core model lines the ae ac series be series and lc series were discontinued in 2014 . currently as of the 2017 model year the ce and re series school buses mfsabs and commercial derivatives are produced alongside the hc series commercial shuttle bus based on the durastar truck . 1 in response to the controversial egr emissions strategy of navistar the maxxforce engines were phased out in the ce series with the cummins isb6 .7 essentially taking the place of both previous diesel engines after being introduced as an option . 2 in 2015 ic debuted its first alternative fuel vehicle showing a propane powered ce series with a psi 8.8 l v8 engine . 3 in 2016 the same engine was introduced in a gasoline fueled configuration . 4 products edit school commercial buses edit model designations prior to 2010 ic used the following nomenclature on school buses to designate the engine type ; subsequently only the model prefix has been used . diesel engine configuration be series ce series fe series re series v8 i.e. t444e vt365 mf7 be200 ce200 re200 inline 6 i.e. dt466 mfdt ce300 fe300 re300 ic bus product line school buses model name production date assembly location chassis configuration chassis model vehicle type seating capacity notes ae series ac series 2010 2015 tulsa oklahoma cutaway cab chassis international terrastar school bus mfsab type a shuttle bus 36 ae series 31 ac series available as the ac series shuttle bus and the ae series school bus both are based on the international terrastar . the ae series is the first cutaway chassis school bus from ic bus . the ae ac series have a standard flat floor interior 5 as of july 2015 the ae product line was dropped from the web site . 6 be series 2006 2015 cowled chassis international 3300lp school bus mfsab type b commercial bus 14 30 the be series is a lower gvwr version of the ce series ; it is marketed towards customers who transport special needs students competing as an alternative to van based buses . apart from its smaller size the be differs from the ce on the inside ; a flat floor interior is standard . as of july 2015 the be product line was dropped from the web site . 6 ce series 2001 present cowled chassis international 3800 2001 2004 international 3300 2005 present school bus mfsab type c commercial bus 29 77 school bus mfsab 52 commercial bus the ce series was introduced in 2001 based on the international 3800 and is currently in its second generation based on the international durastar 3300 . the ce was the basis for a diesel electric hybrid option with both charge sustaining and charge depleting hybrid configurations . beginning with 2015 production the cummins isb6 .7 is available alongside the navistar maxxforce engines as an option . ic bus is planning to install psi 8.8 l propane engine on their ce series as a part of the option . the maxxforce engines options were discontinued for the 2016 model year . fe series 1990 2010 conway arkansas front engine stripped chassis international 3900fc school bus type d 54 90 the ic fe was introduced in 1990 as the ward senator and later as the amtran genesis with gradual updates 1992 1995 1998 2005 2008 . in april 2010 ic bus removed the ic fe product literature from its website as dealers announced its discontinuation . due to its chassis design the fe series was only sold with inline six engines 300 series designation re series rc series 1996 present conway arkansas tulsa oklahoma rear engine stripped chassis international 3000 school bus mfsab type d commercial bus transit bus 66 90 school bus mfsab 56 commercial bus the ic re was introduced in 1996 as the amtran re with an interior redesign in late 1998 ; an exterior update was made in 2005 . commercial variants were initially branded as the rc series taking on the re series name around 2009 . ic bus product line commercial buses model name production date assembly location chassis configuration chassis model vehicle type seating capacity notes lc series 2006 2014 tulsa oklahoma cutaway cab chassis international 3200 low floor shuttle bus the lc series was a low floor ada compliant shuttle bus based on the international durastar cutaway cab . in early 2014 ic bus removed the lc series product literature from its website ; its production status is unknown . hc series 2006 present cutaway cab chassis international 3200 commercial bus limo bus tour bus 45 hc commercial gold platinum 25 hc bronze the hc series is a high floor shuttle bus based on the international durastar cutaway cab sold in various configurations . the hc was also available in a parallel drive hybrid model maxxforce dt version notes hc commercial standard trim hc bronze shorter length version hc gold deluxe trim hc platinum tour bus ; full cab with co pilot seat forward advantage prototype edit the ic fe forward advantage was a school bus prototype built by ic in 2008 as a testbed of a flat floor design in the stepwell due to the compact design of the caterpillar c7 engine . it also included some front end styling modifications influenced by the severe service line of international trucks . as caterpillar has withdrawn from producing diesel engines for the school bus market the forward advantage will not see production in its current form since its design was tailored to the caterpillar engine . hybrid diesel electric buses edit ic offers hybrid diesel electric powertrains in the ce conventional school bus as an option . the buses provide approximately 40 % dubious discuss better fuel economy but cost about two and a half times more than a standard diesel bus 210 000 versus 80 000 . 7 enova systems 8 has entered into a long term supply agreement with ic bus 9 that guarantees that enova s proprietary post transmission parallel hybrid electric drive system will be used in ic bus hybrid electric school buses . the hybrid school bus project features enova s charge depleting or plug in or charge sustaining systems . the drivetrain is powered by valence technology lithium ion phosphate battery modules . the braking system utilizes regenerative braking both as a means to reduce wear on the service brakes and to supply the batteries with extra power . 10 motorcoach prototypes edit at the 2008 american public transportation association expo trade show navistar announced its intention to enter the intercity motorcoach segment by 2010 unveiling two prototypes