Editing IC Bus (section)

=== 2000s ===
[[File:Alpine School District school bus.JPG|alt=|thumb|2015-2024 IC RE]]
In 2000, the IC name came into use for the first time, as AmTran introduced an updated version of its conventional-style bus body.  While still based upon the [[International 3800]] and sharing much of the body with its AmTran Volunteer/CS predecessor, the new bus introduced a redesigned drivers compartment and enlarged windshield.  Named the International IC (IC standing for Integrated Coach/Chassis), the new bus emphasized how the entire vehicle was produced under the corporate entity of Navistar (who had purchased AmTran outright in 1995).  To distinguish the International IC from other buses sharing the 3800 chassis, the hood of the IC was given its own grille and badging (marking the first visual update to International medium-duty trucks since 1989).

To bring the company in line with the truck manufacturing division of Navistar (at the time, International Truck and Engine), AmTran changed its name to International Truck and Bus after 2000; its model lines adopted the International brand name and badging for the body in addition to the chassis.  For 2003, International renamed its bus subsidiary a second time, to IC Corporation.  After a minor revision, the International IC adopted the IC CE-Series name (to match the FE/RE-Series transit-style buses).

During the mid-2000s, IC began an overhaul of its product line.  For 2005, the [[International 3300]] was introduced as a cowled-chassis variant of the International 4000-series (DuraStar), becoming the first completely new cowled chassis from International since 1979.  In 2006, IC produced its first small school bus, the 30-passenger BE200.  In place of a cutaway van chassis, the BE adopted a lower-profile version of the 3300 chassis.  Externally similar to the CE, the smaller BE was designed with a flat-floor interior.

To comply with 2007 EPA emissions standards, IC buses adopted MaxxForce diesel engines for 2007, including the MaxxForce 7 6.4L V8 and the MaxxForce DT 7.6L I6.  For 2008, to improve engine ventilation, the FE was given a wider grille, with the BE and CE adopting the redesigned front bumper of the [[International DuraStar]].

In April 2009, IC Corporation changed its name to IC Bus.

==== Commercial bus production ====
During its existence, the commercial product offerings of AmTran had been strictly derived from its school bus bodies, consisting as a small portion of its sales.  In 2006, IC launched an expansion of its product range.  Alongside the existing commercial derivatives of the BE, CE, and RE, the company introduced buses based on a cutaway-cab version of the International DuraStar.  The HC was a range of [[shuttle bus]]es; the LC was a [[paratransit]] bus with a low-floor configuration.<ref>{{cite press release|url=http://ir.navistar.com/releasedetail.cfm?releaseid=199864|title=IC Corporation Expands Beyond School Buses to Include New Commercial Bus Line; Five New Commercial Bus Models Launched|date=7 June 2006|publisher=Navistar|access-date=3 January 2018|archive-url=https://web.archive.org/web/20180104073350/http://ir.navistar.com/releasedetail.cfm?releaseid=199864|archive-date=January 4, 2018|url-status=dead}}</ref>