GMAT Focus EditionVerbal ReasoningEasy

A local government, aiming to reduce traffic congestion, implemented a new policy requiring all large delivery trucks to operate only between 10 PM and 5 AM. After six months, a report indicated that overall traffic congestion during peak daytime hours had not significantly decreased. Which of the following, if true, would most help to explain why the policy failed to achieve its intended effect?

  1. ASome businesses have adapted to the new policy by increasing their use of rail transport for deliveries.
  2. BThe number of large delivery trucks operating in the city has remained constant over the past year.
  3. CMany small and medium-sized delivery vehicles, which are not subject to the new policy, contribute significantly to daytime traffic congestion.
  4. DThe policy led to an increase in overnight noise complaints from residents living near major delivery routes.
Show answer & explanation

Correct answer: C. Many small and medium-sized delivery vehicles, which are not subject to the new policy, contribute significantly to daytime traffic congestion.

The policy targeted large delivery trucks, but if other types of vehicles are a major source of congestion, the policy would not be effective. This option identifies a significant overlooked factor.

Why the other options are wrong

  • A. This describes a business adaptation, but it doesn't explain why daytime traffic congestion didn't decrease, and might even reduce it slightly.
  • B. This information suggests the policy's target group didn't change, but doesn't explain why congestion didn't decrease.
  • D. This describes a negative consequence of the policy but does not explain its failure to reduce daytime congestion.

Identifying Overlooked Factors

Locating an unconsidered element that significantly impacts the outcome or effectiveness of a plan or observation.

  • Focuses on reasons why an expected outcome didn't occur.
  • Highlights aspects not addressed by the initial plan or analysis.
  • Often involves considering a broader context or alternative contributors.

Memory trick: Don't just see the big trucks, check for the smaller ones too!

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