Highway Capacity Manual Methodologies for Corridors Involving Freeways and Surface Streets (2020) / Chapter Skim
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Pages 384-389
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From page 384... ...
378 A P P E N D I X G Glossary General Acronyms π΄ππ·π = Active Traffic and Demand Management; π΄πππΆ = all-way stop controlled intersection; π·π·πΌ = diverging diamond interchange; π·ππ = Department of Transportation; πΈπ΅ = eastbound; πΉπ»ππ΄ = Federal Highway Administration; π»πΆπ = Highway Capacity Manual; πΌπΆπ = Integrated Corridor Management; πΌπ
π = interchange ramp terminal; πππΈ = Measures of Effectiveness; ππ΅ = northbound; ππ΄π = queue accumulation polygon; ππ΅ = southbound; ππππΌ = single-point urban interchange; ππππΆ = two-way stop controlled intersection; ππ΅ = westbound. General Values π/π = demand to capacity ratio; πΈπ· = expected demand (veh/h)
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From page 385... ...
379 1. Arterial Facilities 1.1.
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From page 386... ...
380 TSB = time period with active spillback (minutes)
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From page 387... ...
381 π , = adjustment factor for π; due to impact of grade; π , = adjustment factor for π; due to impact of interchange density; π , = adjustment factor for π; for length of the weaving segment; π , = adjustment factor for π; due to impact of access point density; π , = adjustment factor for π; due to impact of trucks; π , = adjustment factor for π; for off-ramp flow; π , = adjustment factor for π; for on-ramp flow; π , = adjustment factor for π; due to impact of ramp flow; π , = adjustment factor for π; for volume ratio; π = adjustment factor for π; (Eq.
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From page 388... ...
382 πΏπΉπ
= share of the total flow on lane π ππΉπ
πΉ(π, π‘,π) = actual flow that can exit at off-ramp π during time step π‘ in time interval π (veh/h)
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From page 389... ...
383 during time interval π; π = number of computational time steps in an analysis period; π = measured speed at the beginning of congestion at the upstream detector (mi/h)
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