ITE Journal May 2018 - 35

SAFETY

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Guidance on
Signal Control

Strategies for Pedestrians
to Improve Walkability

By Sirisha Kothuri, Ph.D., Edward Smaglik, Ph.D., P.E.,
Andrew Kading, E.I.T., Christopher Sobie, E.I.T., and Peter Koonce, P.E.

W

alking as a transportation mode is associated with a number of benefits
ranging from reductions in congestion and emissions levels to improvements in personal health. Therefore, many communities across the
United States are eager to increase walk mode shares. Yet, the traffic

signal timing and optimization models we use continue to focus only on automobile traffic.
These legacy signal timing policies at intersections have prioritized vehicular movements, leading
to large and sometimes unnecessary delays for pedestrians. Because pedestrian trips are short,
delays at signalized intersections can affect pedestrians disproportionately and are a key factor in
pedestrian non-compliance.1
Historically, there has been limited research focus on control
strategies for pedestrians at signalized intersections. Generally,
control strategies can be divided into two categories: safety or
efficiency-related. A safety-related signal timing strategy may
seek to improve pedestrian safety by reducing pedestrianvehicle conflicts. Examples include leading pedestrian interval
(LPI) and exclusive pedestrian phase (aka, the Barnes Dance).
Efficiency-related control strategies aim to reduce delays for
pedestrians. Examples of efficiency control strategies include

reductions in cycle length during coordinated operation, free
operation, permissive period changes, and actuated coordination. Historically, these have received less attention in pedestrian
focused literature.
The choice of a control strategy depends on the operational
objectives with no one solution that fits all scenarios. Hence, the
objective of this article is to provide the practitioner with a toolkit
of pedestrian control strategies, along with safety and efficiency
impacts, so that an informed decision can be made.
w w w .i t e.o r g

May 2018

35


http://www.ite.org

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
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