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Pages 3-6

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From page 3...
... 1 CHAPTER 1 INTRODUCTION BACKGROUND Left-turn movements at intersections, including driveways -- especially movements that are made from lanes that are shared with through traffic -- cause delays and adversely impact safety. Although updated warrants have been developed in some jurisdictions for when to provide leftturn lanes, many agencies still use research from the mid-1960s.
From page 4...
... 2 Table 1. Expected percent reduction for adding turn lane identified in FHWA study (2)
From page 5...
... 3 • Chapter 3: Literature Review -- Left-Turn Lane Design. This chapter contains information on the design of left-turn lanes, reviewing information from state design manuals and national reference documents, as well as recent research.

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