Table 2 FootNotes

1.  Data represent activity for a given mode across single and multiple mode
shipments.  For example, total truck activity includes private truck and/or
for-hire truck single mode combined with private and for-hire truck segments
of all multiple mode trips including truck.

2.  Average miles and ton-miles are based on the estimated distance traveled,
not on Great Circle Distance.   Calculation of average miles per shipment
excludes shipments of STCC 27, Printed Matter. See the "About the Mileages"
section of the Technical Documentation for further explanation. 
