international conference on bicycle urbanism-- bike counts

3

Boulder County, CO

4

City of Boulder

City of Longmont

BOULDER COUNTY

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Boulder County Traffic Stations

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Typical Boulder County Roads

Gravel Roads

Roads w/out shoulders

Roads with shoulders

7

Typical Traffic Station

9

DS Axle NumHt YYYY-MM-DD hh:mm:ss Dr Speed Wheelbase Hdwy Gap Ax Gp Rho Cl Nm Vehicle0 0000002f 4 7/18/2012 14:01:18 BA 45.3 5.2 40.7 40.6 2 1 1 1 10 MC oo0 65 4 7/18/2012 14:06:43 AB 22 3.4 0.6 0.5 2 1 1 1 10 MC oo0 0000010c 4 7/18/2012 14:32:40 BA 44.8 4.9 46.5 45.8 2 1 1 1 10 MC oo0 188 4 7/18/2012 14:56:49 BA 44.4 4.6 123.8 123.7 2 1 1 1 10 MC oo0 000001eb 4 7/18/2012 15:05:47 AB 20.2 3.3 6.6 6.5 2 1 1 1 10 MC oo0 000002d6 4 7/18/2012 15:29:55 BA 27.6 3.8 35.7 35.7 2 1 1 1 20 MC oo0 0000038a 4 7/18/2012 15:50:59 BA 48.1 4.8 101.9 101.2 2 1 1 1 10 MC oo0 000003ca 4 7/18/2012 15:58:29 AB 23.3 3.3 7.2 7.1 2 2 1 1 0000001c MC oo0 482 4 7/18/2012 16:17:02 AB 62.4 5.3 80.7 80.6 2 1 1 1 10 MC oo0 000004ca 4 7/18/2012 16:23:00 BA 48.6 5.2 10.1 10 2 1 1 1 10 MC oo0 0000054c 4 7/18/2012 16:32:05 AB 56.8 5.1 7.1 6.9 2 1 1 1 20 MC oo0 0000061b 4 7/18/2012 16:46:12 AB 51.2 5.2 2.4 2.2 2 1 1 1 10 MC oo0 0000068f 4 7/18/2012 16:53:32 BA 53 4.2 9.2 9.1 2 1 1 1 10 MC oo0 000006c9 4 7/18/2012 16:59:43 AB 23 3.4 9 8.8 2 1 1 1 10 MC oo0 743 4 7/18/2012 17:09:28 BA 41.5 4.6 1.6 1.5 2 1 1 1 10 MC oo0 0000074b 4 7/18/2012 17:10:51 AB 52 5.4 66.9 66.8 2 1 1 1 10 MC oo0 787 4 7/18/2012 17:16:38 BA 47.5 4.4 79.1 79 2 1 1 1 10 MC oo0 000007b1 4 7/18/2012 17:19:12 BA 44.3 4.8 59.1 59 2 1 1 1 10 MC oo0 000007bd 4 7/18/2012 17:20:00 AB 55.2 5.3 1.8 1.7 2 1 1 1 10 MC oo0 000007d5 4 7/18/2012 17:22:22 AB 55.2 5.3 4 3.9 2 1 1 1 10 MC oo0 0000088a 4 7/18/2012 17:32:09 AB 53.6 4.9 4.5 4.4 2 1 1 1 20 MC oo0 0000088e 4 7/18/2012 17:32:11 BA 43.7 4.5 278.6 278.4 2 1 1 1 10 MC oo0 000008aa 4 7/18/2012 17:34:37 AB 18.2 3.3 47.9 47.8 2 1 1 1 10 MC oo0 994 4 7/18/2012 17:46:20 AB 60.7 5.4 10 9.9 2 1 1 1 10 MC oo0 998 4 7/18/2012 17:46:40 AB 60.2 5.5 19.5 19.4 2 1 1 1 10 MC oo0 00000a12 4 7/18/2012 17:51:38 AB 56.4 5.5 1.6 1.4 2 1 1 1 20 MC oo0 00000a56 4 7/18/2012 17:57:06 AB 55.4 5.5 32.9 32.8 2 1 1 1 10 MC oo0 00000bb9 4 7/18/2012 18:16:35 AB 55 5 64.4 64.3 2 1 1 1 10 MC oo0 00000bc5 4 7/18/2012 18:17:15 AB 25.2 3.3 2.5 2.4 2 1 1 1 10 MC oo0 00000bc9 4 7/18/2012 18:17:21 BA 36.8 5 365.5 365.4 2 1 1 1 10 MC oo0 00000c0d 4 7/18/2012 18:21:07 AB 52.9 5 1.5 1.4 2 1 1 1 20 MC oo0 00000c31 4 7/18/2012 18:23:43 AB 54.7 5 10.9 10.7 2 1 1 1 10 MC oo0 00000c8a 4 7/18/2012 18:30:05 AB 54.4 5.3 1.7 1.6 2 1 1 1 20 MC oo0 00000cfa 4 7/18/2012 18:36:34 AB 24.8 3.4 3 2.9 2 1 1 1 10 MC oo0 00000d89 4 7/18/2012 18:47:46 AB 20.3 3.4 5.5 5.4 2 1 1 1 10 MC oo0 00000d9d 4 7/18/2012 18:49:00 AB 21.1 3.3 41.7 41.5 2 1 1 1 10 MC oo0 0.00E+00 4 7/18/2012 19:00:35 AB 52.3 5.2 118.7 118.5 2 1 1 1 10 MC oo

10



11

0

1

2

3

4

5

6

0 10 20 30 40 50 60 70 80

Vehi

cle

Whe

elba

se (ft

)

Vehicle Speed (mph)

Speed vs. Wheelbase - Motorcycle Class

4-6’3-4’

Selected for “Beta Test”

14

beta Test- Attachment Methods and Counters Studied

MetroCount:clear vinyl sleeve

Eco-Counter:metal bracket

15

Station Set-UpsRoads with ShouldersRoads without Shoulders

4 ft

33 ft4 ft27 ft

Three Distance Groups:• 4’ Group• 27’ Group• 33’ Group

16

Riding in Laps to Increase Quantity of Data

17

Riding in Laps to Increase Quantity of Data

19

Class Name Description Number Percent of TotalClass1 CYCLE Bicycle 144 33.33%Class2 MC Motorcycle 4 0.93%Class3 SV Car 198 45.83%Class4 SVT Car+Trailer 2 0.46%Class5 TB2 2 Axle Rigid Body Truck 32 7.41%Class6 TB3 3 Axle Rigid Body Truck 0 0.00%Class7 T4 4 Axle Rigid Body Truck 36 8.33%Class8 ART3 3 Axle Articulated Truck 6 1.39%Class9 ART4 4 Axle Articulated Truck 10 2.31%Class10 ART5 5 Axle Articulated Truck 0 0.00%Class11 ART6 6 Axle Articulated Truck 0 0.00%Class12 BD B-Double 0 0.00%Class13 DRT Double/ Road Train 0 0.00%

Class Bin Report

20

Class Name Description Number Percent of TotalClass1 CYCLE Bicycle 144 33.33%Class2 MC Motorcycle 4 0.93%Class3 SV Car 198 45.83%Class4 SVT Car+Trailer 2 0.46%Class5 TB2 2 Axle Rigid Body Truck 32 7.41%Class6 TB3 3 Axle Rigid Body Truck 0 0.00%Class7 T4 4 Axle Rigid Body Truck 36 8.33%Class8 ART3 3 Axle Articulated Truck 6 1.39%Class9 ART4 4 Axle Articulated Truck 10 2.31%Class10 ART5 5 Axle Articulated Truck 0 0.00%Class11 ART6 6 Axle Articulated Truck 0 0.00%Class12 BD B-Double 0 0.00%Class13 DRT Double/ Road Train 0 0.00%

T4:Class Name Description Number Percent of TotalClass1 CYCLE Bicycle 144 33.33%Class2 MC Motorcycle 4 0.93%Class3 SV Car 198 45.83%Class4 SVT Car+Trailer 2 0.46%Class5 TB2 2 Axle Rigid Body Truck 32 7.41%Class6 TB3 3 Axle Rigid Body Truck 0 0.00%Class7 T4 4 Axle Rigid Body Truck 36 8.33%Class8 ART3 3 Axle Articulated Truck 6 1.39%Class9 ART4 4 Axle Articulated Truck 10 2.31%Class10 ART5 5 Axle Articulated Truck 0 0.00%Class11 ART6 6 Axle Articulated Truck 0 0.00%Class12 BD B-Double 0 0.00%Class13 DRT Double/ Road Train 0 0.00%

21

Individual Vehicle Report for T4 Trucks

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23


24


25

Bicycle Combinations

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27


29

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

ARX Cycle Vehicle Classes

1: Cycle (Bicycle)2: MC (Motorcycle)3: SV (Passenger Car)4: SVT (Car with Trailer)

5: TB2 (Rigid-body 2 Axle Truck)


7: T4 (Rigid-body 4 Axle Truck)

8: ART3 (3 Axle Articulated Truck)




12: BD (B-Double)

13: DRT (Double/ Road Train)

30

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

ARX Cycle Vehicle Classes

1: Cycle (Bicycle)2: MC (Motorcycle)3: SV (Passenger Car)4: SVT (Car with Trailer)








12: BD (B-Double)


Let’s look at the T4 Class.

31

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

ARX Cycle Rules for T4:

4 or more axles2 axle groups

1st axle group 2nd axle group

T4 Class (Rigid-body 4 Axle Trucks)

32

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard



1st axle group 2nd axle group

T4 Class (Rigid-body 4 Axle Trucks)

Axles are in the same axle group if they are less than 5.4 ft apart from their neighbor

4 or more axles & 2 axle groups

36

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard



1st axle group 2nd axle group 1st axle group 2nd axle group

Looking at the T4 Class

37

4 or more axles2 axle groupsd1 > 4 ft

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard



BOCO Rules for T4:

d1 d1

d1 for a bike almost never exceeds 4 ft.

Editing the T4 Class

38

4 or more axles2 axle groupsd1 > 4 ft

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard



BOCO Rules for T4:

d1

BOCO Rules for 2Bikes:

d1 d3d2

4 axles2 axle groups2.9 ft < d1 < 4 ft2.9 ft < d3 < 4 ft

Editing the T4 Class

39

1: 1Bike (1 Bicycle)

2: 2Bikes (2 Bicycles)



5: MC (Motorcycle)

6: SV (Passenger Car)

7: SVT (Car with Trailer)








15: BD (B-Double)


1: Cycle (Bicycle)

2: MC (Motorcycle)

3: SV (Passenger Car)

4: SVT (Car with Trailer)








12: BD (B-Double)


ARX Cycle Vehicle Classes BOCO Vehicle Classes

41

x 1 = 90x 2 = 16x 3 = 21x 4 = 4

Total Bikes = 131

42

x 1 = 90x 2 = 16x 3 = 21x 4 = 4

Total Bikes = 131

The ARX Classification would have only counted 90 bikes

but the BOCO Classification counted 131 bikes!

43

0.00%

10.00%

20.00%

30.00%

40.00%

50.00%

60.00%

70.00%

80.00%

90.00%

100.00%

0 5 10 15 20 25 30 35

Coun

ter A

ccur

acy

33' Group

27' Group

4' Group Distance from counter (ft.)

Counter Accuracy vs. Distance from Counter

Eco BOCO 5' Loop ARX 5' Loop

44

Distance to

Counter

Number of Bikes

Counter Accuracy

95% Confidence

Interval

Number of bikes counted

Correction Factor

(1/accuracy)

Corrected Number of Bikes

Margin of Error (bikes)

4' 1000 94.68% 2.68% 947 1.056 1000 ± 2727' 1000 54.72% 9.85% 547 1.827 1000 ± 9933' 1000 60.35% 8.95% 604 1.657 1000 ± 90

Applying Correction Factors(results from MetroCount using BOCO Scheme)

45

Distance to

Counter

Number of Bikes

Counter Accuracy

95% Confidence

Interval


Correction Factor

(1/accuracy)



4' 1000 94.68% 2.68% 947 1.056 1000 ± 2727' 1000 54.72% 9.85% 547 1.827 1000 ± 9933' 1000 60.35% 8.95% 604 1.657 1000 ± 90

Applying Correction Factors

Let’s say 1,000 bicyclists cross the tubes 4 feet from the counter.

46

Distance to

Counter

Number of Bikes

Counter Accuracy

95% Confidence

Interval


Correction Factor

(1/accuracy)



4' 1000 94.68% 2.68% 947 1.056 1000 ± 2727' 1000 54.72% 9.85% 547 1.827 1000 ± 9933' 1000 60.35% 8.95% 604 1.657 1000 ± 90


At this distance, the counter has an average accuracy of 94.68%, so we can expect 947 bicyclists will be counted.

47

Distance to

Counter

Number of Bikes

Counter Accuracy

95% Confidence

Interval


Correction Factor

(1/accuracy)



4' 1000 94.68% 2.68% 947 1.056 1000 ± 2727' 1000 54.72% 9.85% 547 1.827 1000 ± 9933' 1000 60.35% 8.95% 604 1.657 1000 ± 90


Using the correction factor to correct for the known undercount, we can calculate that 1,000 bicyclists crossed the tubes

48

Distance to

Counter

Number of Bikes

Counter Accuracy

95% Confidence

Interval


Correction Factor

(1/accuracy)



4' 1000 94.68% 2.68% 947 1.056 1000 ± 2727' 1000 54.72% 9.85% 547 1.827 1000 ± 9933' 1000 60.35% 8.95% 604 1.657 1000 ± 90

Confidence Intervals & Margins of Error

With a confidence interval of 2.68%, the margin of error for this count is ± 27 bicyclists

49

Distance to

Counter

Number of Bikes

Counter Accuracy

95% Confidence

Interval


Correction Factor

(1/accuracy)



4' 1000 94.68% 2.68% 947 1.056 1000 ± 2727' 1000 54.72% 9.85% 547 1.827 1000 ± 9933' 1000 60.35% 8.95% 604 1.657 1000 ± 90

Now let’s look at the whole chart.


50

Distance to

Counter

Number of Bikes

Counter Accuracy

95% Confidence

Interval


Correction Factor

(1/accuracy)



4' 1000 94.68% 2.68% 947 1.056 1000 ± 2727' 1000 54.72% 9.85% 547 1.827 1000 ± 9933' 1000 60.35% 8.95% 604 1.657 1000 ± 90

Since the margins of error are larger at greater distances, using two counters will minimize the margin of error.


4’

4’

51

Ingredients for Success

1. Thinner walled “bicycle” tubes; they still count cars just as well

52



2. A secure tube attachment method that avoids pinching or kinking

53



2. A secure tube attachment method that avoids pinching or kinking

3. A copy of our “BOCO Classification Scheme” to use with your traffic analysis software

bike

motorcycle

SV SVT

TB2

TB3

ART4(WB-40)

bike

ART5(WB-50)

ART5(WB-62)

T4 (non standard

ART3Non standard

motorcycle

ART6non standard

DRT non standard

BD non standard

54

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Boulder County Traffic Stations

55

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N 9

5TH

ST

N 7

5TH

ST

JAY RD

LOOKOUT RD

BASELINE RD

VALMONT RD

N 6

3RD

ST

N 7

6TH

ST

N 6

1ST

ST

N 7

1ST

ST

BASELINE RD

NIWOT RD

LEE HILL D

R

SUNSHINE DR

N 7

9TH

ST

VALMONT RD

OLD

E ST

AG

E R

D

CH

ERRY

VALE

RD

LINDEN DR

NEVA RD

N 5

7TH

ST

N 7

3RD

ST

FOURM

ILE CANYON DR

N 6

3RD

ST

SPIN

E R

D

N 45TH

ST

NIWOT RD

!

!

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#

7 Day Counts- 2 Counters

24 Hour Counts- 2 Counters24 Hour Counts- 1 CounterUnpaved Road- No Bike Counts

56

What’s possible now?

• Calculating Bicycle Miles Traveled (BMT) on county roads.

• Tracking long term trends of bicycling rates.

• Estimating county-wide and corridor specific mode share. (Using bike count data in combination with vehicle counts and transit ridership)

• Better understanding of bicycle traffic and travel patterns during design phases of roadway projects.

• Better prioritization of investments. (Should widths; intersection treatments)

• Ability to evaluate the impact, use and safety of new investments.

57

Bicycle Counts with Pneumatic Tube CountersAlex Hyde-WrightTransportation Engineering Assistant Boulder County Transportation [email protected]

Brian Graham, AICPBicycle Planner/ Employee Transportation Coordinator Boulder County Transportation [email protected]

Krista Nordback, Ph.D, PEResearcher Oregon Transportation Research and Education Consortium (OTREC)[email protected]

58

END OF PRESENTATION

international conference on bicycle urbanism-- bike counts

Engineering

t4 trucks

individual vehicle report

class7 t4

bicycle combinations

class bin report

longmontboulder county

wheelbase motorcycle

typical traffic station