The storm created travel headaches for many people who opted to go out despite pleas by authorities to stay put. The Oklahoma Highway Patrol said Interstate 40 was closed in two places in western portions of the state because of wrecks, including the jackknifing of several semitrailers in icy conditions in Caddo County. A 45-year-old Oklahoma City man died early Saturday after his semitrailer struck two others on icy I-40 in Custer County and then was hit by a car. The patrol is investigating the wreck.