ITE Journal May 2018 - 32

Results and Conclusions
Most of the countermeasures to reduce bicycle collisions were
implemented by the end of 2015. Table 1, which provides a
summary of the total number of bicycle collisions in the City of
La Quinta by calendar year, shows a sharp decline in the number
of bicycle collisions in 2016-2017 during a period of time when
traffic volumes were increasing along many of the major traffic
corridors in the City, and the numbers of fatal and injury collisions
throughout the United States were increasing significantly.5

Recommendations
The results in Table 1 show that the countermeasures implemented
by the City of La Quinta to reduce bicycle related collisions have
been effective and should be considered by other public agencies.
It is also recommended that public agencies consider working with
bicycle vendors, bicycle clubs, and bicycle coalitions to:
ƒ Identify locations for future improvements such as lane diets to
provide on-street striped bicycle lanes;
ƒ Use social media to encourage bicyclists to wear bright
fluorescent colored clothing to increase their conspicuity during
the day and to equip their bicycles with reflectors as well as
flashing or steady burning front and rear lamps to increase
their conspicuity at night. (Figure 4 shows a bicyclist "Riding
Bright");6,7
ƒ Encourage riding with the flow of traffic rather than against
traffic so that drivers will see them more clearly when executing
turning movements at intersections and driveways;
ƒ Encourage respecting and obeying traffic control devices such as
stop signs and traffic signals. (This may be best accomplished by
partnering with law enforcement officers);
ƒ Encourage riding in the on-street striped bicycle lanes so drivers
can comply with California's recently enacted lateral separation
rule; and
32

May 2018

i te jo urn al

Marban Multimedia Productions

Bicycle Facilities, Part 4 of the California Manual on Uniform Traffic
Control Devices (MUTCD), and the findings published in a presentation made at the ITE 2015 Western District Annual Meeting in
Las Vegas, NV titled, "Minimizing the Impact of Latest MUTCD on
Traffic Signal Operation."2,3,4
In 2018-2019, the City will be constructing five roundabouts.
Four of them will be replacing existing traffic signals and one will
be replacing an all-way stop where a recent bicycle collision in
April, 2018 underscores the need to construct the roundabout as
soon as possible. The streets connecting the roundabouts will also
be reduced from four through lanes to two so that bicycle lanes can
be provided between the roundabouts. The project is being funded
by an Active Transportation Program grant exceeding $7 million
and located in the Old Town/Village area of La Quinta.
Figure 4. Bicyclist "Riding Bright"
ƒ Implement an "Educating Road Users About Bicycle Infrastructure" program similar to the ITE award-winning video
produced by the City of Edmonton, Alberta, Canada.8
Table 1. Bicycle Collision Trends in the City of La Quinta (2014-2017)*
Before
After

Year

Total Bicycle Collisions

Fatal/Injury

2014

10

7

2015

13

10

2016

2

0

2017

5

5

* Includes collisions on public streets only

Acknowledgment
The authors appreciate the review of the contents of this paper by
Bryan McKinney, City Engineer, City of La Quinta and Steven B.
Colman (lifetime member of ITE) for technical accuracy. itej

References
1. Koonce, P., et al. "Improving Bicycle Detection Pavement Markings
Symbols to Increase Comprehension at Traffic Signals." ITE Journal.
Washington DC, USA: March 2017.
2. American Association of State Highway and Transportation Officials.
Guidelines for the Development of Bicycle Facilities, 4th Edition. Washington,
DC, USA: 2012.
3. California Department of Transportation. Manual on Uniform Traffic
Control Devices for Streets and Highways. Sacramento, CA, USA: 2014.
4. Guedes, J. "Minimizing The Impact of Latest MUTCD on Traffic Signal
Operation." ITE 2015 Western District Annual Meeting. Las Vegas, NV, USA:
July 2015.
5. National Highway Traffic Safety Administration. Quick Facts 2016.
Washington, DC, USA: October 2017.



Table of Contents for the Digital Edition of ITE Journal May 2018

President’s Message
Director’s Message
People in the Profession
ITE News
ITE, FHWA, and Carmanah Rally to Keep Rectangular Rapid-Flashing Beacons in Our Safety Toolbox
Improving Arterial Roads to Support Public Health: How Can We Do This?
ITE’s Transportation and Health Initiative
Technical Programs Division Spotlight
Industry News
Calendar
Where in the World?
Member to Member: Jing Zhang, AICP, PTP, LEED AP ND
Countermeasures Prove Effective in Reducing Bicycle Collisions
Guidance on Signal Control Strategies for Pedestrians to Improve Walkability
Factors Affecting Vehicle Passing Distance and Encroachments While Overtaking Cyclists
Measuring the Success of Modal Shift: The Impact on Last Mile Connectivity
Professional Services Directory
ITE Journal May 2018 - 1
ITE Journal May 2018 - 2
ITE Journal May 2018 - 3
ITE Journal May 2018 - President’s Message
ITE Journal May 2018 - 5
ITE Journal May 2018 - Director’s Message
ITE Journal May 2018 - 7
ITE Journal May 2018 - People in the Profession
ITE Journal May 2018 - 9
ITE Journal May 2018 - 10
ITE Journal May 2018 - ITE News
ITE Journal May 2018 - ITE, FHWA, and Carmanah Rally to Keep Rectangular Rapid-Flashing Beacons in Our Safety Toolbox
ITE Journal May 2018 - Improving Arterial Roads to Support Public Health: How Can We Do This?
ITE Journal May 2018 - 14
ITE Journal May 2018 - 15
ITE Journal May 2018 - 16
ITE Journal May 2018 - ITE’s Transportation and Health Initiative
ITE Journal May 2018 - 18
ITE Journal May 2018 - Technical Programs Division Spotlight
ITE Journal May 2018 - Industry News
ITE Journal May 2018 - 21
ITE Journal May 2018 - Where in the World?
ITE Journal May 2018 - 23
ITE Journal May 2018 - 24
ITE Journal May 2018 - 25
ITE Journal May 2018 - 26
ITE Journal May 2018 - Member to Member: Jing Zhang, AICP, PTP, LEED AP ND
ITE Journal May 2018 - 28
ITE Journal May 2018 - Countermeasures Prove Effective in Reducing Bicycle Collisions
ITE Journal May 2018 - 30
ITE Journal May 2018 - 31
ITE Journal May 2018 - 32
ITE Journal May 2018 - 33
ITE Journal May 2018 - 34
ITE Journal May 2018 - Guidance on Signal Control Strategies for Pedestrians to Improve Walkability
ITE Journal May 2018 - 36
ITE Journal May 2018 - 37
ITE Journal May 2018 - 38
ITE Journal May 2018 - 39
ITE Journal May 2018 - Factors Affecting Vehicle Passing Distance and Encroachments While Overtaking Cyclists
ITE Journal May 2018 - 41
ITE Journal May 2018 - 42
ITE Journal May 2018 - 43
ITE Journal May 2018 - 44
ITE Journal May 2018 - 45
ITE Journal May 2018 - Measuring the Success of Modal Shift: The Impact on Last Mile Connectivity
ITE Journal May 2018 - 47
ITE Journal May 2018 - 48
ITE Journal May 2018 - 49
ITE Journal May 2018 - Professional Services Directory
ITE Journal May 2018 - 51
ITE Journal May 2018 - 52
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