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It can be done-- counting bicycles and cars, at the same time, with the same equipment! In this presentation my colleagues and I share the results of our research, which was published in the ITE Journal.
Citation preview
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Boulder County, CO
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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
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Typical Traffic Station
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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
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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
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
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’
12
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
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Riding in Laps to Increase Quantity of Data
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Riding in Laps to Increase Quantity of Data
18
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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
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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%
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Individual Vehicle Report for T4 Trucks
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Individual Vehicle Report for T4 Trucks
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Individual Vehicle Report for T4 Trucks
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Individual Vehicle Report for T4 Trucks
25
Bicycle Combinations
26
Bicycle Combinations
27
Bicycle Combinations
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)
6: TB3 (Rigid-body 3 Axle Truck)
7: T4 (Rigid-body 4 Axle Truck)
8: ART3 (3 Axle Articulated Truck)
9: ART4 (4 Axle Articulated Truck)
10: ART5 (5 Axle Articulated Truck)
11: ART6 (6 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)
5: TB2 (Rigid-body 2 Axle Truck)
6: TB3 (Rigid-body 3 Axle Truck)
7: T4 (Rigid-body 4 Axle Truck)
8: ART3 (3 Axle Articulated Truck)
9: ART4 (4 Axle Articulated Truck)
10: ART5 (5 Axle Articulated Truck)
11: ART6 (6 Axle Articulated Truck)
12: BD (B-Double)
13: DRT (Double/ Road Train)
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
ARX Cycle Rules for T4:
4 or more axles2 axle groups
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
4 or more axles & 2 axle groups
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
ARX Cycle Rules for T4:
4 or more axles2 axle groups
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
ARX Cycle Rules for T4:
4 or more axles2 axle groups
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
ARX Cycle Rules for T4:
4 or more axles2 axle groups
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)
3: 3Bikes (3 Bicycles)
4: 4Bikes (4 Bicycles)
5: MC (Motorcycle)
6: SV (Passenger Car)
7: SVT (Car with Trailer)
8: TB2 (Rigid-body 2 Axle Truck)
9: TB3 (Rigid-body 3 Axle Truck)
10: T4 (Rigid-body 4 Axle Truck)
11: ART3 (3 Axle Articulated Truck)
12: ART4 (4 Axle Articulated Truck)
13: ART5 (5 Axle Articulated Truck)
14: ART6 (6 Axle Articulated Truck)
15: BD (B-Double)
16: DRT (Double/ Road Train)
1: Cycle (Bicycle)
2: MC (Motorcycle)
3: SV (Passenger Car)
4: SVT (Car with Trailer)
5: TB2 (Rigid-body 2 Axle Truck)
6: TB3 (Rigid-body 3 Axle Truck)
7: T4 (Rigid-body 4 Axle Truck)
8: ART3 (3 Axle Articulated Truck)
9: ART4 (4 Axle Articulated Truck)
10: ART5 (5 Axle Articulated Truck)
11: ART6 (6 Axle Articulated Truck)
12: BD (B-Double)
13: DRT (Double/ Road Train)
ARX Cycle Vehicle Classes BOCO Vehicle Classes
40
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
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
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
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
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
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
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
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
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
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
Now let’s look at the whole chart.
Confidence Intervals & Margins of Error
50
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
Since the margins of error are larger at greater distances, using two counters will minimize the margin of error.
Confidence Intervals & Margins of Error
4’
4’
51
Ingredients for Success
1. Thinner walled “bicycle” tubes; they still count cars just as well
52
Ingredients for Success
1. Thinner walled “bicycle” tubes; they still count cars just as well
2. A secure tube attachment method that avoids pinching or kinking
53
Ingredients for Success
1. Thinner walled “bicycle” tubes; they still count cars just as well
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
!
!
!
#
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