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Delta Traffic Calming
Policy and Procedure
By
Tim Murphy, AScT, MBA
Transportation Manager
The Corporation of Delta
Outline
► Traffic Calming
► Traffic Calming in Delta
► Making of the Policy & Procedure
► Policy & Procedure
Programming
Process
Funding
Traffic Calming Measures
► Closing Remark
The Corporation of Delta
Traffic Calming
► Traffic Calming is the
combination of mainly
physical measures that
reduce the negative effects
of motor vehicle traffic in
residential neighbourhoods
► First used in Europe
(Netherlands)
► Canadian Guide published
in December 1998
The Corporation of Delta
Traffic Calming in Delta
► Firstproject initiated for the Burnsview
neighbourhood in 1998
► Devices implemented in Burnsview in 2000
► Second project started in Sunbury
neighbourhood in 2000
► Retained a transportation engineering
consultant (Urban Systems Ltd.) to
recommend a program and process in 2000
The Corporation of Delta
Making of the Policy
and Procedure
► Need to formalize programming, process
and funding of projects
► Review of Previous Delta Traffic Calming
Projects
► Technical Advisory Committee
► Literature Review
The Corporation of Delta
Technical Advisory
Committee
► Tim Murphy, Transportation Manager (Facilitator)
► Sgt. Bob Jones, Delta Police
► Rene Payer, Manager of Engineering Operations
► Deputy Fire Chief Richard LehBauer
► Ian Radnidge, Manager of Roads & Transportation
► Rick Walters, Roads & Transportation Technologist
The Corporation of Delta
Programming
► Candidate neighbourhoods can be self-
selected or selected by the Municipality
► Candidate neighbourhoods subject to
preliminary screening
► Need for Traffic Calming and the Will of
neighbourhood to invest time in Traffic
Calming exercise determined
The Corporation of Delta
Traffic Calming
Supply and Demand
Demand Supply
Vision
Need Skill
Traffic Calming
Funding
Will
Improved Quality
of Life
The Corporation of Delta Source: Adapted from Navin, 1995
Preliminary Scoring for Local
Roads
Criteria Points Basis for Point Assignment
Speed 0 to 25 85th percentile speeds more than 5
km/h above the posted speed limit (5
points for every km/h)
Volume 0 to 25 Average daily traffic volumes (1 point
for every 100 vehicles)
Total Points 50 Need 25 or more points to be
Possible considered for Traffic Calming
The Corporation of Delta
Initiate a
Traffic Calming
Traffic Calming
Project
Process Overview
Identify Issues,
Concerns,
Problems & Values ► 6-Step process
► Defined roles for
Determine the
Existing
Characteristics
Neigbourhood, Council
and staff
Develop a
Traffic
Calming Plan
► Propose check points
to determine
Implement
Traffic neighbourhood’s and
Calming Plan
Council’s “Will”
Monitor the
Traffic
Calming Plan
The Corporation of Delta
Initiate a Traffic
Calming Project
Initiate
COUNCIL STAFF NEIGHBOURHOOD
Issues
Identify Identify Identify
Quantify Need
for a
Study
Plan
Authorize Prioritize
Resources Relative
Install NO for Study? 1 Need
YES
Monitor
The Corporation of Delta
Identify Issues
Initiate
COUNCIL STAFF NEIGHBOURHOOD
Issues
Define
1
Study Area
Quantify
Establish a
Plan Public Participation
Process Identify Issues,
Problems, Concerns
Install 2 & Values
Monitor
The Corporation of Delta
Quantify Issues
Initiate
COUNCIL STAFF NEIGHBOURHOOD
Establish
Issues
6 Objectives for the 2
Neighbourhood
Quantify
Set Criteria
for Objectives
Plan
Collect Collect
Traffic Data Other Data
Install
3
Monitor
The Corporation of Delta
Develop a Traffic
Calming Plan
Initiate
COUNCIL STAFF NEIGHBOURHOOD
3
Issues
Develop Strategies
to Satisfy
Quantify Objectives
Generate Traffic
Plan Review and Select
Calming Plan
a Preferred Traffic
Endorse Options
Calming Plan?
Traffic Calming YES
Install NO Plan? NO
Prepare Report
4 of Study End
YES
Monitor
The Corporation of Delta
Implement Traffic
Calming Plan
Initiate
COUNCIL STAFF NEIGHBOURHOOD
Issues 4 Prepare Preliminary
Design, Estimate
& Funding Options Support
Approve
Local
Quantify Funding in
YES Improvement
Capital Prepare and
YES Initiative?
Budget? Implement Public
NO
Plan NO Awareness Campaign
End
Refer
to Next Install Traffic Calming Plan
Install Year's
Budget 5
Monitor
The Corporation of Delta
Monitor Traffic
Calming Plan
Initiate
COUNCIL STAFF NEIGHBOURHOOD
5
Issues
6 Month
P erformance
Quantify 6 P eriod
Collect Collect Indicate Level of
Plan A ccept Traffic Traffic Data Other Data S atisfaction
NO Calming P lan
P erformance?
Analy ze P erformance
YES
Install
P repare Performance Report
End
Monitor
The Corporation of Delta
Funding
► Municipality has funded most projects in
previous years
► Municipality will continue to provide funding
for projects which meet minimum threshold
requirements
► Local improvement funding also an option
for future projects
The Corporation of Delta
Operational Thresholds for
Municipal Funding
MIMIMUM THRESHOLD CONDITION
CHARACTERISTIC
Local Roads Collector Roads
Traffic infiltration 20% or more is 60% or more is
through traffic through traffic
Excessive travel 85th percentile speed 85th percentile speed
speeds is > 10km/h over is > 15 km/h over
posted speed limit posted speed limit
Traffic Volume > 1,000 vehicles/day > 4,000 vehicles/day
The Corporation of Delta
Traffic Calming Measures
Application
► Generally applied to local and collector
roads in urban areas
► Restriction on measures applied to transit
and primary emergency response routes
The Corporation of Delta
Traffic Calming
Measures
► VerticalDeflection
► Horizontal Deflection
► Obstruction
The Corporation of Delta
Vertical Defection
Measures
► Raised Crosswalk
► Raised Intersection
► Rumble Strip
► Speed Hump
► Speed Cushion
► Textured Crosswalk
The Corporation of Delta
Raised Crosswalk
The Corporation of Delta
Raised Intersection
The Corporation of Delta
Speed Hump
The Corporation of Delta
Offset Speed Hump
The Corporation of Delta
Speed Cushion
The Corporation of Delta
Textured Crosswalk
The Corporation of Delta
Horizontal Deflection
Measures
►1 – Lane Chicane
► 2 – Lane Chicane
► Curb Extension
► Curb Radius Reduction
► On – Street Parking
► Raised Median Island
► Traffic Circle
The Corporation of Delta
1 – Lane Chicane
The Corporation of Delta
2 – Lane Chicane
The Corporation of Delta
Curb Extension
The Corporation of Delta
Curb Radius Reduction
The Corporation of Delta
Raised Median
The Corporation of Delta
Traffic Circle
The Corporation of Delta
Obstruction Measures
► Directional Closure
► Diverter
► FullClosure
► Intersection Channelization
► Raised Median Through Intersection
► Right-in/Right-out Island
The Corporation of Delta
Directional Closure
The Corporation of Delta
Diverter
The Corporation of Delta
Full Closure
The Corporation of Delta
Intersection Channelization
The Corporation of Delta
Raised Median Through
The Corporation of Delta
Right-in/Right-out Island
The Corporation of Delta
Summary
► Traffic Calming
► Traffic Calming in Delta
► Making of the Policy & Procedure
► Policy & Procedure
Programming
Process
Funding
Traffic Calming Measures
The Corporation of Delta
Closing Remark
► TrafficCalming, applied
correctly:
Can improve the Quality
of Life in residential
neighbourhoods; and
Be greatly appreciated.
The Corporation of Delta
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