ats14- creating and using good counting information- krista nordback 2
DESCRIPTION
As old as it is true, the statement “It doesn’t count unless it’s counted” can still vex planners and advocates wanting to make the case that active transportation programs and investments in their communities are effective. Krista Nordback will explain how jurisdictions can create robust bicycle and pedestrian count programs based on new guidance from the Federal Highway Administration’s Traffic Monitoring Guide. Roger Geller will then briefly describe his city’s longtime bicycle counting program that has relied on the organized efforts of many volunteers – and, more importantly, how Portland has been able to use that data to illustrate the effectiveness of bicycling, demonstrate its increasing safety, and provide usable data to traffic engineers when designing intersections.TRANSCRIPT
Bike to Work Day: Increasing Cycling and Reducing Driving
Krista Nordback, P.E., Ph.D.Oregon Transportation Research and Education Consortium (OTREC)
Oregon Active Transportation SummitMonday, April 21, 2014
SOURCE: Community Cycles
Overview
• Introduction• Data & Methods• Results• Conclusions
SOURCE: DRCOG
SOURCE: Community Cycles
More Cyclists!
SOURCE: Community Cycles
SOURCE: Community Cycles
Fewer Cars?
Data
BICYCLE DATA
Automated ContinuousBicycle Counters
25 stations
• 3 on-street since 2010
• 22 on paths since 1999
BOULDER COLORADO
Inductive loop counters on-street
Inductive loop counters on-street
2-Jun 12-Jun 22-Jun 2-Jul 12-Jul 22-Jul 1-Aug 11-Aug0
50
100
150
200
250
300
350
400
450
June and July 2008D
aily
Bic
ycle
Cou
nt
Bike to Work Day June 25, 2008
Arap38th
Arapah
oe1
Centennial
Footh
ills
Footh
ills1
FthlsN
ECor
FthlsS
ECor
PrlPkw
ySECor
PrlPkw
ySW
Cor0
200400600800
1,0001,2001,4001,600
2005
Bike to Work DayWednesday
Bicycle Count Station
Ave
rage
Dai
ly B
icyc
lists
Bike To Work Day Doubles Counts
2005 2007 2008 2009 2010 20110
200
400
600
800
1000
1200
1400
1600
Bike to Work DayAverage Wednesday in June and July
Year
Dai
ly B
icyc
le C
ount
MOTOR VEHICLE DATA
Motor Vehicle CountersInductive Loops
Photo Red-light Camera
Camera
SOURCE: Metro Count
Motor Vehicle
Counters
Motor Vehicle Count Stations
• 5 Stations• 5 Years
Number of Stations By Year
2005 22007 22008 52009 42010 3
Total Cases 16
Motor Vehicle Counts(June and July)
0
2
4
6
8
10
12
Bike to Work DayAverage Wednesday
Aver
age
Dai
ly T
raffi
c
6/1 6/11 6/21 7/1 7/11 7/21 7/310
5,000
10,000
15,000
20,000
25,000
30,000D
aily
Mot
or V
ehic
le C
ount
on
Can
yon
at 2
8th
6/1 6/11 6/21 7/1 7/11 7/21 7/310
5,000
10,000
15,000
20,000
25,000
30,000D
aily
Mot
or V
ehic
le C
ount
on
Can
yon
at 2
8th
Bike to Work Day, Wednesday, June 25, 2008
Reality Check
• 500 additional bike counts on Bike to Work Day• Average about 27,000 motorists/day on typical
summer Wednesdays
500/27,000 = 2% drop in counts
Can we find a 2% change in motor traffic volumes?
Methods
• Test each of the 16 cases as pairs:– Bike to Work Day count– Average of all other Wednesdays in June and July
• Paired Student T-Test:
Is there evidence of lower motor traffic on Bike to Work Day than on the average summer Wednesday?
Results
< -1000
-1000 to -750
-750 to -500
-500 to -250
-250 to 0
0 to 250
250 to 500
>500
0
1
2
3
4
5
6
7
Difference in motor traffic between average Wednesdays in June and July and Bike to Work Day
Num
ber o
f Ins
tanc
es
Difference between Wednesdays and Bike to Work Day
Station 2005 2007 2008 2009 2010Southbound 28th Street at Canyon Blvd. -0.42% -2.06% -1.20%Northbound 28th Street at Canyon Blvd. -2.64% -1.71% -2.74%Southbound 28th Street at Arapahoe -0.05% -1.77% -0.16%Westbound US 36 at McCaslin in Superior -1.38% 0.80% -2.07% -1.29%Eastbound US 36 at McCaslin in Superior -0.27% 1.59% -1.58%
Significant decrease on Bike to Work Day at 80% confidence level
Results of Paired T-test
For the 16 test pairs (one-tailed test):– P-value: 0.016– There is evidence at the 95% confidence level that
Bike to Work Day motorized traffic is lower.
Evidence of Reduced Traffic on Bike to Work Day
• 5 of the 16 cases show a significant drop in motor traffic at the 80% confidence level.
• 14 of the 16 cases show a decrease in traffic.• 1% drop in traffic on average across all 16
cases.• Paired t-test: Bike to Work Day is lower than
Wednesdays with 95% confidence.
Conclusions
Conclusions• About twice as many cyclists on Bike to Work
Day in Boulder• There is evidence of lower motor traffic
volumes on Bike to Work Day in Boulder.
Questions?
Krista Nordback, P.E., Ph.D.Oregon Transportation Research and Education Consortium (OTREC)
SOURCE: Denver Regional Council of Governments (DRCOG)
Limitations
• Boulder specific.• Photo red-light camera counts have not been
validated.• Two of the motor vehicle locations are outside
of the city.
2010 Boulder Bicyclist Patterns
Sunday
Monday
Tuesday
Wednesd
ay
Thursday
Friday
Saturday
0%20%40%60%80%
100%120%140% Arap38th
Arapahoe2BdwyNsideBdwySsideBldrCrkEsideBldrCrkEside2BldrCrkWsideBldrCrkWside2BrdwyCentennialFoothillsFoothills2SkunkToArap
Perc
ent o
f Ave
rage
An
nual
Dai
ly B
icyc
lists