Hcm2010 Workshop Washburn
-
Upload
gabemzaman -
Category
Documents
-
view
221 -
download
0
Transcript of Hcm2010 Workshop Washburn
-
8/11/2019 Hcm2010 Workshop Washburn
1/30
The 2010 HighwayCapacity Manual
W at s New orUninterrupted Flow
-
8/11/2019 Hcm2010 Workshop Washburn
2/30
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
-
8/11/2019 Hcm2010 Workshop Washburn
3/30
Major Methodology
-
8/11/2019 Hcm2010 Workshop Washburn
4/30
Chapter 10: Freeway Facilities
Provides method to facilitate analysis of multiple
Can be used to analyze oversaturated conditions
-
8/11/2019 Hcm2010 Workshop Washburn
5/30
Facility LOS
-
8/11/2019 Hcm2010 Workshop Washburn
6/30
Chapter 10:
Facilities
erv ce
VolumeTables
Urban Freeways
-
8/11/2019 Hcm2010 Workshop Washburn
7/30
Chapter 10:
Facilities
erv ce
VolumeTables
Rural Freeways
-
8/11/2019 Hcm2010 Workshop Washburn
8/30
FREEVAL
-
8/11/2019 Hcm2010 Workshop Washburn
9/30
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
-
8/11/2019 Hcm2010 Workshop Washburn
10/30
Speed-Flow Curves
HCM 2000 curves
HCM 2010 curves No longer interpolate;
choose nearest 5 mi/h
-
8/11/2019 Hcm2010 Workshop Washburn
11/30
Revised recommendation for measurementof weaving distance (short length), S . B B
-
8/11/2019 Hcm2010 Workshop Washburn
12/30
No longer 3 different classifications (Types A, B, C)
For typical ramp-weave segment:
NWL = 2
-
8/11/2019 Hcm2010 Workshop Washburn
13/30
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
-
8/11/2019 Hcm2010 Workshop Washburn
14/30
Determine Capacity
ase on ens ty o 43 pc m n
Based on weaving demand flows
-
8/11/2019 Hcm2010 Workshop Washburn
15/30
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
-
8/11/2019 Hcm2010 Workshop Washburn
16/30
Estimate the total lane changing rate for
weaving vehicles
-
8/11/2019 Hcm2010 Workshop Washburn
17/30
Estimate the total lane changing rate for
non-weaving vehicles Calculate non-weaving vehicle index
rate for 3 different ranges of index
-
8/11/2019 Hcm2010 Workshop Washburn
18/30
Set non-weaving vehicle lane changing rate
equal to appropriate value
a cu a e o a ane c ang ng ra e
-
8/11/2019 Hcm2010 Workshop Washburn
19/30
-
weaving vehicles
-
8/11/2019 Hcm2010 Workshop Washburn
20/30
e erm ne ens y
-
8/11/2019 Hcm2010 Workshop Washburn
21/30
apter : reeway erge anDiverge Segments
Significant HCM 2000 Errata
FM
-
8/11/2019 Hcm2010 Workshop Washburn
22/30
apter : reeway erge anDiverge Segments
Significant HCM 2000 Errata
prediction
-
8/11/2019 Hcm2010 Workshop Washburn
23/30
Chapter 14: Multilane Highways
No significant changes to automobile mode
cyc e a e
-
8/11/2019 Hcm2010 Workshop Washburn
24/30
Chapter 15: Two-Lane Highways
Two-way analysis eliminated
Results from both directions can be-
Bicycle LOS added
highways
-
8/11/2019 Hcm2010 Workshop Washburn
25/30
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
-
8/11/2019 Hcm2010 Workshop Washburn
26/30
Chapter 15: Two-Lane Highways
RevisedfG
tables
HCM 2000
HCM 2010
-
8/11/2019 Hcm2010 Workshop Washburn
27/30
Chapter 15: Two-Lane Highways
RevisedET
tables
HCM 2000
HCM 2010
-
8/11/2019 Hcm2010 Workshop Washburn
28/30
ap er : wo- ane g waysService Volume Table
-
8/11/2019 Hcm2010 Workshop Washburn
29/30
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
-
8/11/2019 Hcm2010 Workshop Washburn
30/30
Questions?