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. Take a FREE Practice Test Now This questions appears in the following tests: Colorado Combination , North Carolina Combination , North Dakota Combination , Oregon Combination ,