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Transportation Engineering Estimate the free-flow speed of a six-lane suburban freeway with 12 ft lanes, a...

Transportation Engineering

Estimate the free-flow speed of a six-lane suburban freeway with 12 ft lanes, a right-side lateral clearance of 2 ft , and a ramp density of 3.5 ramps/mi. Normal conditions, that is, good weather, no incidents, no work zones, and regular users of the facility, may be assumed.

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Table 2. Adjustment Factors for Right-Shoulder Lateral Clearance Reduction in Free-Flow Speed, fic(mph) Lanes in One Direction Right Shoulder Lateral Clearance (ft 0.0 0.4 0.8 1.2 4 0.0 0.2 0.4 0.6 0.8 0.0 0.6 5 4 3 2 2.4 3.0 3.6 2.0 2.4Table 1. Adjustment Factors for Lane Width Lane Width (ft) >= 12 10 Reduction in Free-Flow Speed, fLw(mph) 0.0 2.0 6.5With 싸eona ho HCN 2010 total 从duchon cl in ou quemo FFS 5 O 16 322 (35101 oith 2 12t and 3lanes in one dusdt FFS aS0-64-223

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