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keywords:(four-lane road)
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roads
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keywords:(Four-lane roads)
Safety Effects of the Conversion of Rural Two-Lane Roadways to Four-Lane Roadways. Summary Report
Comparisons of Crashes on Rural Two-Lane and Four-Lane Highways in Texas
Potential Crash Reduction Benefits of Safety Improvement Projects. Part A: Shoulder Rumble Strips
Monitoring Prevention of Single Vehicle Run-Off-the-Road Accidents