US: Heavy-duty: BAC

The Transit Coach Operating Duty Cycle was originally designed to measure heavy-duty vehicle&#8217;s fuel economy (SAE J1376, canceled 1997). This cycle, also referred to as Business-Arterial-Commuter (BAC) to reflect its composite character, includes a sequence of the following segments performed on a chassis dynamometer:
 * 1) Central Business District (CBD) segment
 * 2) 300 second idle period
 * 3) Arterial segment
 * 4) CBD segment
 * 5) Arterial segment
 * 6) CBD segment
 * 7) Commuter segment

Composite BAC Cycle CBD Segment Arterial Segment Commuter Segment

The following are characteristic parameters of the composite BAC cycle:
 * 1) Duration: 2830s
 * 2) Driving distance: 22.53 km
 * 3) Maximum speed: 88.5 km/h (55 mph)
 * 4) Average speed: 28.9 km/h