Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and...
-
Upload
pbriresearchlibrary -
Category
Documents
-
view
229 -
download
2
Transcript of Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and...
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
1/24
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
2/24
2
Outline
Objectives
Methods
Results
Strengths &Limitations
RecommendedNext Steps
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
3/24
3
Objectives
US Congress mandated measurement of changes inbicycling & walking
Supplementary effort to U. of Minnesota Travel Surveys
Counts and surveys conducted in 4 NTPPCommunities in 2007 and 2010
Link to National Bicycle & Pedestrian Documentationand other national research efforts
Model to estimate use on un-built NTPP projects (areawide, specific locations)
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
4/24
4
Related Sources & Efforts
National Bicycle & Pedestrian Documentation Project(since 2002, 50 participating agencies, extensive database, foundation for analysis)
National Household Travel Survey
Supplemental Minnesota, Sheboygan counts & surveys
UC Berkeley Traffic Safety Center & other studies
Caltrans Seamless Travel Study (2+ years, 80 countlocations, 4 automatic count machines, new findings oncorrelation between volumes and independent
variables)
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
5/24
5
Objectives of theNational Documentation Project
Establish a consistent national methodology forconducting bicycle and pedestrian count and
surveys;
Establish a national database of bicycle andpedestrian count information generated by theseconsistent methods and practices; and
Use the count and survey information to beginanalysis on the correlations bicycle and pedestrianactivity and local characteristics
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
6/24
6
Aggregate Model
Work CommuteEmployed adults riding bicycles/walking (US Census)
School CommuteSchool children riding bicycles/walking (US Census and available sources)
College CommuteCollege students riding bicycles/walking (UC Census)
Utilitarian TripsNon-work or school trips by bicycle/walking (surveys, other)
Recreational/DiscretionaryRecreational/discretionary trips by bicycle/walking (surveys, studies)
Total daily estimated bicycle and walking trips
Average trip length, trip purpose
Replaced vehicle miles, health, transportation, other benefits
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
7/24
7
NTPP Counts & Surveys
Consistent data collection methods
National database accessible to public
Formation of models
Two basic elements:
Bicycle & PedestrianCounts
Two-hour countsdone annually
Measures annual changes andallows for analysis fromindependent variables
Surveys of Bicyclists& Pedestrians
Tested and refinedquestions
Trip Purpose
Trip LengthMulti-modal Linkages
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
8/24
8
NTPP Counts & Surveys
0
50
100
Year 1
Year 2
Year 3
Measure average changes inbicycle and pedestrian volumes atsome locations before and afterNTPP projects.
Measure changes in travelcharacteristics.
Measures transportation benefits.
Input to aggregate model
0
20
40
60
Befo e Afte
Bicycle
Pedest ian
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
9/24
9
Sample Results: Marin County
20 locations
1999 historic counts available
Weekday/weekend counts in 2007,2008, 2009 and 2010
Count selection criteria
Times and days
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
10/24
10
Screen line count location
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
11/24
11
Results: Bicycling on the Rise
+103% 1999-2008 on weekdays, +48% weekends
+17% 2007-2008 on weekdays, +21% on weekends
72% male, 13% children
29% not wearing helmets
11 days/month average
10 miles average round trip
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
12/24
12
Results: Mixed Bag for Walking
+48% 1999-2008 on weekdays, -29% weekends
-8% 2007-2008 on weekdays, -10% on weekends
15 days/month average
1.5 miles average round trip
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
13/24
13
Results:Aggregate for Marin
Pedestrians
115,680 daily pedestrian trips
81,288 saved vehicle trips 27,442 saved vehicle miles
Bicyclists
18,428 daily bicycle trips 24,965 saved vehicle trips 37,525 saved vehicle trips
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
14/24
14
Results: Validation
Bicyclists Pedestrians
Alta Model 18,428 115,680
NHTS 14,128 141,283
Report to Congress 17,909 117,406
Average 16,821 124,789
Table C
Average Daily Bicycle/Pedestrian Trips: Comparing Model OutputsMarin County
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
15/24
15
Strengths
Actual counts near NTPP projectsshould yield conclusive proof toCongress
Use of aggregate and corridormodels can provide projections forun-built NTPP projects
Counts in 4 NTPP communities hashelped refine methodology
NTPP effort will contribute to field
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
16/24
16
Pedestrian Survey
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
17/24
17
Weaknesses & Challenges
Unrealistic expectations on accuracy
Uncoordinated count, survey, and research efforts
Selection of count and survey locations
Connection between counts and aggregate model
Normal daily & seasonal variations
Pulsing of volumes
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
18/24
18
Monthly Variation
Multi-Use Paths: Monthly Variations in Use
%
%
%
6 %
8 %
1 %
1 %
1 %
16 %
18 %
an Mar A r May n l A t o
MonthlyUse
(%
ofAnnual
otalUse)
n iana oli 3 lo ation Monon rail lo ation ho lan A ra
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
19/24
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
20/24
20
Impact of Climate
Multi-Use Paths Monthly Variations in Use on Monon
Trail (Ind.) vs. Temperature
00
20
0
0
0
0
00
a e a p a l ep ct o ec
Temperature(F)
0 02 0
0
0
0
0 0
2 00
%
ofAnnualUse
empe at e al e
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
21/24
21
Variability
Mu t -Use aths: a Va at ons n Use
0%
5%
10%
15%
20%
25%
Mon Tue Wed Thur Fri at un
%ofWeek
Us
e
ndianapoli (30 location ) Terry Her hey Par Trail(Hou ton) uter Ban erage
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
22/24
22
Daily Patterns
Multi-Use aths H urly Variations in Week ay Use
0
5
10
15
20
25
6
7 8 910 11
noon 1 2 3 4 5 6 7 8
9P
Starting Hour
%o
fDailyUse
Hershey Prk rail ay ct
onon rail ctuterbanks
Licking County July
anhattan
ron
Queens
rooklyn
taten s
erage
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
23/24
23
Recommended Next Steps
Assemble a Working Group of interestedresearchers to collaborate on and produceresearch
Fund and develop a Bicycle/Pedestrian TrafficMonitoring Guide
Fund research to develop an area wide and
location specific estimating tool
Promote research results that show the role ofwalking/bicycling in transportation
-
8/6/2019 Session 6- "Practices to promote uniformity and quality in nonmotorized data collection and evaluation" by Michael Jones
24/24
24
More Funding is Needed
SAFETEAF Nex S x Yea s
$0
$50
$100
$150
$200
$250
$300
total
unding non otorized
unding
B
s
D
a
s
$287 b100
Source: League of American Bicyclists 2005
$3.2 billion1
l in n o
o n ! " o l # il$
" i %
0
20
40
60
80
100
120
walk to work trips all walking trips
TotalDailyTrips(Mill
ionsofT
Source: 2000 US Census, 2001 National Household Travel Survey
3.0%
10.1%