Demographic and Transportation Parameters in RADTRAN*

Recent efforts at Sandia National Laboratories have focused not only on modification of the RADTRAN transportation risk analysis code but also on updating the default parameters for population, land use, and roadway characteristics used by the code. Changes to the code have been discussed earlier in this Conference (Neuhauser and Reardon 1989). This paper summarizes the results of a review of transportation and demographic parameters, performed to complement recent model modifications.