In order to capture possible rate differences resulting
from carrier type and experience, and/or the manner in which
the load was arranged, the following are included as independ-
ent variables:


 OWNOP = 1 if carrier is an owner-operator, 0 otherwise;
 SHUTTLE = I if carrier is based in Florida or in one of the
 destination states for the haul, 0 otherwise;
 BROKER = 1 if load arranged by a broker, 0 otherwise; and
 OEXPER = number of years of driving experience if an owner-
 operator, 0 otherwise.


SHUTTLE is included on the premise that a carrier based at
either end of the haul would be more likely to possess more
complete market information. BROKER is included to determine
if rates received are dependent upon how the load is arranged.
The driver experience variable, OEXPER, is constructed as an
interaction term with OWNOP, because in general, fleet drivers,
unlike owner-operators, generally have little to do with pro-
curing loads. The general form of the relationship estimated
was:


 (2) PT = PT(D, PKUP, DROPS, DAYLOSS, OWNOP, SHUTTLE,
 BROKER OEXPER).


 To test for nonlinear changes in rates over distance, both D
 and its square, DSQ, were employed in the model. Finally, an
 intercept shifter was employed to capture overall differences
 in rate levels between March and June due to differences in
 market activity. This, in effect, was intended to proxy dif-
 ferences between the survey months in alternative activities
 available to carriers (PA).



 DATA


 On March 28 and 29, 1983, and again on June 1 and 2, 1983
 interviews were conducted with northbound truckers carrying