medium · GMAT Verbal
A city council is debating whether to install red-light cameras at busy intersections. Proponents point to a study of a neighboring city that installed similar cameras and subsequently saw a thirty percent reduction in T-bone collisions at monitored intersections. Proponents argue that installing the cameras in this city will produce a comparable reduction in T-bone collisions here.
Which of the following, if true, most weakens the proponents' argument?
- The collision decline there coincided with a separate program that lengthened yellow-light intervals at those very same intersections.
- Red-light cameras generate substantial fines that can create real financial hardship for the lower-income drivers who get ticketed most often.
- Several drivers surveyed in the neighboring city reported feeling somewhat annoyed by the presence of the new cameras at intersections.
- No traffic-safety intervention of any kind has ever completely eliminated collisions at any monitored city intersection whatsoever.
- The cameras used in the neighboring city were manufactured by the same company that this city's council is currently considering hiring for its own rollout.
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