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Before: 50 crashes/year

Before And After Analysis of Two-Way Left-Turn Lane and Driveway Consolidation Access Management Project Along South Duff Ave. In Ames, Iowa Completed Fall 1994. After: 17 crashes/year 70 percent crash rate reduction Rear end crashes reduced most. Before: 50 crashes/year.

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Before: 50 crashes/year

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  1. Before And After Analysis of Two-Way Left-Turn Lane and Driveway Consolidation Access Management Project Along South Duff Ave. In Ames, Iowa Completed Fall 1994 After: 17 crashes/year 70 percent crash rate reduction Rear end crashes reduced most Before: 50 crashes/year

  2. Ankeny, Iowa Detail Ankeny Blvd.: Recently Completed Raised Median and Driveway Consolidation Project In Commercial District 1st Avenue: Mainly Four-Lane Undivided With Substantial Retail Development-- Potential for Better Access Management Driveway-Related Crashes Des Moines, Iowa Metropolitan Area, 1996 Data

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