Simply changing lanes can cause: Question Simply changing lanes can cause: Answers A “crack-the-whip” effect, resulting in a rollover. A trailer to straighten out. Confusion over which lane the driver is hoping to use. Other drivers to reduce their speed. Explanation Due to the "crack-the-whip" effect caused by rearward amplification, changing lanes too quickly in a combination vehicle can result in a rollover. This questions appears in the following tests: Delaware Combination District Of Columbia Tank District Of Columbia Combination District Of Columbia Combination Florida Combination Georgia Double Georgia Combination Illinois Combination Indiana Combination Kansas Combination Massachusetts Combination Massachusetts Combination Montana Combination Montana Combination New Hampshire Combination New York Double New York Combination Oregon Combination Pennsylvania Combination Texas Combination