ITE Journal - July 2020 - 46

Table 2. Summary of Typical Use Cases Identified for Bicycle Signal Faces.
Sample
Application
Image
Source: Google,
C. Monsere, Toole
Design Group, P.
Singleton

Los Angeles, CA
129 - Bicycle Lane to the Left
Number of
of a Left-Turn Lane
Intersections
41
Bicycle
Lane to the Right
and Context of
of a Right-Turn Lane
Bicycle Signal
Control

Chicago, IL

Portland, OR

Portland, OR

69 - Two-Way Bicycle Lane
on One-Way Street
41 - Two-Way Bicycle Lane
on Two-Way Street

36 - Multiuse Path Crossings
17 - Bicycle-Only Connections
to Parks, Train Stations,
or Center Bike Lanes
15 - Connection to a
Multiuse Path
14 - Contra-Flow Bicycle Lane

11 - Diagonal Crossing
10 - Bicycle Left Turns

Agency Interviews

Table 3. Number of Signal Heads, Lens Diameter, and Visibility
Distance per Approach.
Lens
Number
diameter of bicycle
signal heads
12-inch
1
2
3
12-inch
Subtotal
8-inch
1
2
3
8-inch
 
Subtotal
Total
 

Number of Approaches
by Visibility Distance (ft.)
≤80 >80 and ≤120 >120
19
36
4
14
22
4
1
34
58
8
67
80

Total
59
40
1
100

147

72
89
6
167

1
8
9

140
177
6
323

181

225

17

423

Table 4 Number of Signal Heads by Horizontal and Vertical
Separation Category
Horizontal Separation
Category (ft.)
<3
>3 and ≤8
>8
Total

46

J u ly 2020

ite j o urn al

Number of Approaches by Vertical
Separation Category (ft.)
≤3
>3 and ≤8
>8
Total
53
7
60
15
13
28
77
98
7
182
145
118
7
270

The research team interviewed agency staff to capture their
experience with bicycle traffic signals. Interviews consisted of 25
questions that explored bicycle signal use, road user understanding,
lens visibility and conspicuity, placement of the bicycle signal face,
operations, and research needs. The research team sent recruiting
emails to individuals at agencies with significant experience with
bicycle signals. The research team interviewed 21 agencies, including
six state departments of transportation (California, Delaware,
Maryland, Minnesota, Oregon, and District of Columbia), 14 city
agencies (Akron, OH; Atlanta, GA; Austin, TX; Cambridge, MA;
Chicago, IL; Denver, CO; Lincoln, NE; Minneapolis, MN; Seattle,
WA; Houston, TX; Los Angeles, CA; New York, NY; Portland,
OR; San Francisco, CA), and one county (Hennepin, MN). Many
interviews included multiple professionals at the agency.
The majority of the agencies either did not receive or were not
aware of any reports of driver confusion with bicycle signals. The
few reports of driver confusion stemmed from lack of familiarity
with new installations of bicycle signals and intersection or corridor
operations, or improper placement of bicycle signals. In one case,
confusion was eliminated when new signal poles allowed the
separation of faces. In other cases, confusion diminished with
experience. Most agencies were not aware of any bicycle-motor
vehicle crashes at locations with bicycle signals. About thirty-eight
percent of the agencies interviewed undertook public education
efforts to improve user expectancy and comprehension. While some
agencies felt that additional research is warranted on lens visibility
and conspicuity (52 percent) and size (76 percent), only 38 percent
felt that design refinements to the bicycle symbol itself in the lens



ITE Journal - July 2020

Table of Contents for the Digital Edition of ITE Journal - July 2020

ITE Journal - July 2020 - Cover1
ITE Journal - July 2020 - Cover2
ITE Journal - July 2020 - 3
ITE Journal - July 2020 - 4
ITE Journal - July 2020 - 5
ITE Journal - July 2020 - 6
ITE Journal - July 2020 - 7
ITE Journal - July 2020 - 8
ITE Journal - July 2020 - 9
ITE Journal - July 2020 - 10
ITE Journal - July 2020 - 11
ITE Journal - July 2020 - 12
ITE Journal - July 2020 - 13
ITE Journal - July 2020 - 14
ITE Journal - July 2020 - 15
ITE Journal - July 2020 - 16
ITE Journal - July 2020 - 17
ITE Journal - July 2020 - 18
ITE Journal - July 2020 - 19
ITE Journal - July 2020 - 20
ITE Journal - July 2020 - 21
ITE Journal - July 2020 - 22
ITE Journal - July 2020 - 23
ITE Journal - July 2020 - 24
ITE Journal - July 2020 - 25
ITE Journal - July 2020 - 26
ITE Journal - July 2020 - 27
ITE Journal - July 2020 - 28
ITE Journal - July 2020 - 29
ITE Journal - July 2020 - 30
ITE Journal - July 2020 - 31
ITE Journal - July 2020 - 32
ITE Journal - July 2020 - 33
ITE Journal - July 2020 - 34
ITE Journal - July 2020 - 35
ITE Journal - July 2020 - 36
ITE Journal - July 2020 - 37
ITE Journal - July 2020 - 38
ITE Journal - July 2020 - 39
ITE Journal - July 2020 - 40
ITE Journal - July 2020 - 41
ITE Journal - July 2020 - 42
ITE Journal - July 2020 - 43
ITE Journal - July 2020 - 44
ITE Journal - July 2020 - 45
ITE Journal - July 2020 - 46
ITE Journal - July 2020 - 47
ITE Journal - July 2020 - 48
ITE Journal - July 2020 - 49
ITE Journal - July 2020 - 50
ITE Journal - July 2020 - Cover3
ITE Journal - July 2020 - Cover4
https://www.nxtbook.com/ygsreprints/ITE/ite-journal-july-2021
https://www.nxtbook.com/ygsreprints/ITE/ite-journal-june-2021
https://www.nxtbook.com/ygsreprints/ITE/ite-journal-may-2021
https://www.nxtbook.com/ygsreprints/ITE/ite-journal-april-2021
https://www.nxtbook.com/ygsreprints/ITE/ITE_Mar2021
https://www.nxtbook.com/ygsreprints/ITE/ITE_Jan2021
https://www.nxtbook.com/ygsreprints/ITE/ITE_Dec2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_Nov2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_Oct2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_Sept2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_Aug2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_July2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_June2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_May2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_April2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_March2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_February2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_January2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_December2019
https://www.nxtbook.com/ygsreprints/ITE/G110939_ITE_November2019
https://www.nxtbook.com/ygsreprints/ITE/G110110_ITE_October2019
https://www.nxtbook.com/ygsreprints/ITE/G110109_ITE_September2019
https://www.nxtbook.com/ygsreprints/ITE/G108559_ITE_August2019
https://www.nxtbook.com/ygsreprints/ITE/G108250_ITE_July2019
https://www.nxtbook.com/ygsreprints/ITE/G107225_ITE_June2019
https://www.nxtbook.com/ygsreprints/ITE/G104039_ITE_May2019
https://www.nxtbook.com/ygsreprints/ITE/G104038_ITE_April2019
https://www.nxtbook.com/ygsreprints/ITE/G104036_ITE_March2019
https://www.nxtbook.com/ygsreprints/ITE/G103582_ITE_February2019
https://www.nxtbook.com/ygsreprints/ITE/G102868_ITE_January2019
https://www.nxtbook.com/ygsreprints/ITE/G100155_ITE_December2018
https://www.nxtbook.com/ygsreprints/ITE/G100154_ITE_November2018
https://www.nxtbook.com/ygsreprints/ITE/G99495_ITE_October2018
https://www.nxtbook.com/ygsreprints/ITE/G98028_ITE_September2018
https://www.nxtbook.com/ygsreprints/ITE/G97366_ITE_August2018
https://www.nxtbook.com/ygsreprints/ITE/G96287_ITE_July2018
https://www.nxtbook.com/ygsreprints/ITE/G94315_ITE_June2018
https://www.nxtbook.com/ygsreprints/ITE/G93877_ITE_May2018
https://www.nxtbook.com/ygsreprints/ITE/G93065_ITE_Apr2018
https://www.nxtbook.com/ygsreprints/ITE/G91484_ITE_Mar2018
https://www.nxtbook.com/ygsreprints/ITE/G89434_ITE_Feb2018
https://www.nxtbook.com/ygsreprints/ITE/G86608_ITE_Jan2018
https://www.nxtbookmedia.com