APUs may be a problem for drivers who regularly carry close to the maximum weight limits, especially given the patchwork of state exemptions.
Auxiliary power units, otherwise known as APUs are used by a sizeable amount of truck drivers to help limit fuel use since they exclude the need to run trucks engines on idle while parked. But seeing as they typically weigh a few hundred pounds, they may be a problem for drivers who regularly carry close to the maximum weight limits. With the president’s recent expansion of the MAP-21 bill dealing with state-by-state APU regulations, this may be confusing to drivers crossing state lines.
Below, vehicle satellite tracking company Track Your Truck positioned a guide that can inform drivers exactly how much weight is exempt in each state.
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