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The 2010 HighwayCapacity Manual

W at s New orUninterrupted Flow

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Organization

Volume 2 Uninterrupted

Main Chapters

10 Freeway Facilities

Supplemental chapters

25 Freeway Facilities 11 Basic Freeway Segments

12 Freeway Weaving Segments

26 Freeway & HighwaySegments

2 Freewa Weavin

13 reeway erge vergeSegments

1 Multilane Hi hwa s

28 Freeway Ramps

15 Two-Lane Highways

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Major Methodology

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Chapter 10: Freeway Facilities

Provides method to facilitate analysis of multiple

Can be used to analyze oversaturated conditions

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Facility LOS

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Chapter 10:

Facilities

erv ce

VolumeTables

Urban Freeways

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Chapter 10:

Facilities

erv ce

VolumeTables

Rural Freeways

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FREEVAL

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Chapter 11: Basic Freeway Segments

FFS estimation equation revised Ramp density replaces interchange density

-of segment midpoint)

Number of lanes factor removed xe or a reeways

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Speed-Flow Curves

HCM 2000 curves

HCM 2010 curves No longer interpolate;

choose nearest 5 mi/h

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Revised recommendation for measurementof weaving distance (short length), S . B B

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No longer 3 different classifications (Types A, B, C)

For typical ramp-weave segment:

NWL = 2

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Chapter 12: Freeway Weaving Segments

Maximum weaving length Not a fixed distance

Is governed by point at which capacity is equal to basic

segment capacityof weaving lanes

IfL

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Determine Capacity

ase on ens ty o 43 pc m n

Based on weaving demand flows

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apter : reeway eav ng egments

Final Capacity Smaller of two calculated capacity values

Calculate v/c

If v/c > 1, LOS = F, analyst referred to Freeway

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Estimate the total lane changing rate for

weaving vehicles

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Estimate the total lane changing rate for

non-weaving vehicles Calculate non-weaving vehicle index

rate for 3 different ranges of index

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Set non-weaving vehicle lane changing rate

equal to appropriate value

a cu a e o a ane c ang ng ra e

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-

weaving vehicles

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e erm ne ens y

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apter : reeway erge anDiverge Segments

Significant HCM 2000 Errata

FM

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apter : reeway erge anDiverge Segments

Significant HCM 2000 Errata

prediction

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Chapter 14: Multilane Highways

No significant changes to automobile mode

cyc e a e

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Chapter 15: Two-Lane Highways

Two-way analysis eliminated

Results from both directions can be-

Bicycle LOS added

highways

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Chapter 15: Two-Lane Highways

ew r g way c ass Moderate development in rural areas, scenic

roadwa s

Service measures

Class I ATS and PTSF Class II PTSF only

Class III PFFS only

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Chapter 15: Two-Lane Highways

RevisedfG

tables

HCM 2000

HCM 2010

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Chapter 15: Two-Lane Highways

RevisedET

tables

HCM 2000

HCM 2010

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ap er : wo- ane g waysService Volume Table

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Supplemental Chapters

Electronic-only

arge au ence:

Users who seek a greater depth of understanding

software

Exam le roblems that illustrate the use of

alternative tools to analysis situations nothandled by the HCM

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Questions?