@article{Jessup:206790,
      recid = {206790},
      author = {Jessup, Eric and Casavant, Ken and Lawson, Catherine and  Kirk, Alan},
      title = {Intercept Surveys: Productivity in Collecting Truck Trip  Data, A Case Study of Portland, Oregon},
      journal = {Journal of the Transportation Research Forum},
      address = {2006},
      number = {1424-2016-117986},
      year = {2006},
      abstract = {This study examines and contrasts the use of intercept  surveys at different locations (a highway
roadside, a port  and a warehouse) to generate details useful to states’  modeling and freight planning
needs for truck movements,  particularly at the sub-county level. Data collected at  roadside locations
provides complete trip detail for all  inter-regional movements (highway locations) and also  trip
detail for almost all intra-regional freight movements  (warehouse/distribution center locations).
Interviews at  the warehouse/distribution center and interstate highway  weigh station provide the
highest commodity type response  rates, while the preponderance of container traffic at the  port
facility yields limited responses on payload  information. Different locations yielded differing
question  response rates.},
      url = {http://ageconsearch.umn.edu/record/206790},
      doi = {https://doi.org/10.22004/ag.econ.206790},
}