HomeMy WebLinkAboutOES 11-03
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REPORT TO
FINANCE & OPERATIONS COMMITTEE
Report Number: OES 11-03
Date: April 1 0, 2003
From:
Richard W. Holborn, P.Eng.
Division Head
Municipal Property & Engineering
Subject:
Rosebank Road at Sheppard Avenue Intersection
Investigation into the feasibility of installing Traffic Control Signals
Recommendation:
1. That Report OES 11-03 regarding the investigation into the feasibility of installing
traffic control signals at Rosebank Road and Sheppard Avenue be received;
Financial Implications: There are no direct cost implications related to the
investigation at this time. Future capital costs, however, related to the re-construction
of the intersection, and necessary land acquisition based upon the design option
selected, will be included in future capital budget forecasts.
Background: Report OES 54-02, recommending a Stop Sign By-law Amendment
for Rosebank Road at Sheppard Avenue (West Intersection), was considered by the
Finance & Operations Committee at their regular meeting of November 25, 2002. The
resolution resulting from the consideration of the report approved the installation of an
all-way stop at the west intersection on an interim basis but also directed staff to further
investigate the installation of traffic control signals at the intersection and to report back
on the matter.
Based on the direction received, correspondence was sent to the Region of Durham on
December 13, 2002 requesting technical assistance to determine the feasibility of
installing traffic control signals at the intersection. The response received from the
Region of Durham on February 7, 2003 (copy attached) confirmed the City staff
position, that, given the existing 35 metre offset configuration of the intersection, a
traffic control signal could not be installed and operated safely without a realignment of
Rosebank Road. Furthermore, it was also noted that the installation and operation of
two independent traffic control signals would not meet with acceptable design standards
due to the short distance that exists between the sidestreet approaches of Rosebank
Road.
014
Report OES 11-03
Date: April 1 0, 2003
Subject: Rosebank Road at Sheppard Avenue
Page 2
Based on the outcome of the investigation, the following capital improvement options
are available to better manage traffic volumes at the intersection in the longer-term:
1. Full Re-alignment and Signalization
As determined during the design and reconstruction phases of the south leg of
Rosebank Road in 1998, a number of property frontages along the west side of
Rosebank Road must be purchased in order to accommodate a full re-alignment.
Unfortunately purchase agreements could not be reached with the majority of
property owners during the period of reconstruction resulting in the delay of the
realignment plan that would have allowed for the future installation of traffic
control signals. Although it is uncertain whether or not land acquisition
agreements could be reached at this time, the full re-alignment of Rosebank
Road is the preferred option even though this particular design is likely the most
expensive. A copy of the full realignment design plan is attached as Option #1.
2. Signalization and Minor Re-alignment
It has been identified in the investigation that a traffic control signal could be
installed and operated safely if the offset distance between the north and south
legs of Rosebank Road did not exceed 15 metres. In order to accommodate this
re-alignment the acquisition of additional property would still be required. The
phasing of the signal would require a longer cycle time resulting in the potential
for longer vehicle queues. The preliminary design exercise that has been
completed so far suggests that a minor re-alignment could occur at this location.
A copy of the preliminary minor re-alignment design plan is attached as Option
#2.
3. Alternative Design Roundabout (Traffic Circle)
As an alternative to the provision of either of the aforementioned realignment
and signalization options, it is also possible that a roundabout (traffic circle)
design could be developed to accommodate future traffic volumes within the
existing municipal property boundaries. This non-traditional type of design would
be less expensive to construct and would require less additional property than a
realigned and signalized intersection, but it may also create an element of
confusion for some motorists, as traffic circle designs are not very common in
this area. Considerable effort, however, would be made to develop a design that
clearly guides the motorist through the circle yet is effective in its nature. A copy
of the preliminary traffic circle design plan is attached as Option #3.
Report OES 11-03
Date: April 10, 2003 [,15
Subject: Rosebank Road at Sheppard Avenue
Page 3
Although the newall-way stop condition that presently exists at the west intersection of
Rosebank Road at Sheppard Avenue has improved the operational efficiency and
safety of the intersection, it is still regarded as an interim measure only. Considerable
queuing is currently present during peak periods on Sheppard Avenue and some
confusion is also experienced as motorists enter Sheppard Avenue from the south
approach of Rosebank Road. As traffic volumes increase over time, the need for
intersection improvements such as those presented in this report will be required.
Staff will continue to evaluate each available option and initiate the necessary design
and capital budget estimating and forecasting to bring this project to an approval and
construction stage in the near future.
Attachments:
1.
2.
Region of Durham correspondence dated February 7,2003
Preliminary design plan for full re-alignment and signalization, Option #1
3.
4.
Preliminary design plan for minor re-alignment and signalization, Option #2
Preliminary design plan for roundabout (traffic circle), Option #3
Prepared By:
Everet
Director
Operations & Emergency Services
RWH:ds
I:\COUNCIL\OES I I-O3.docApr-O3
Copy: Chief Administrative Officer
Recommended for the consideration of
Pickering City Council
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The Regional
Municipality
of Durham
Works
Department
PO BOX 623
'105 CONSUMERS DR.
WHITBY ON L1N'6A3
CANADA'
(905) 668-7721
Fax: (905) 668-2051
E-Mail:
works@region,durham,on,ca
www,region,durham,on,ca
J.R. McCorkell, P,Eng.
Commissioner
of Works
Please quote our ref:
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"SERVICE'EXCELLEiVCE
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February 7, 2003
í""ITY OF PjCKEFiH\!G
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MUNIGIPi\L\-,ROytR, y 'ti\i\:J¡¡,.Llill.\)
City of Pickering,
Pickering Civic Complex
One The Esplanade
PICKERING ON L 1V 6K7
Attention:
Mr. C. Stephen Brake ,
Supervisor, Traffic Engineering and Waste Management
, '
Dear r ~
RE: Sheppard Avenue and Rosebank Road,
, 'Traffic ControrSiQnal
On behalf of the City of Pickering, we have completed a review on the
feasibility of installing a traffic control signal 'at the subject intersectiön '
and operating the system within acceptable design standards.
The subject location is considered both a "long-offset" and a "far-right
offset" intersection, as Rosebank Road is offset by 35 metres from the
north approach and south approach as it intersects Sheppard Avenue.
Long-offset intersections'requiredtwo independent sets of traffic
control signals as the distance between the side roads exceeds 15
metres arid a maximum viewing distance of 55 metres can'not be
qbtained from the primary signal head on the main-street and the
painted stop bars. '
A "far-right offset" intersection is defined as an intersection where the
intersecting road on the right of either main-street approach is farthest
from the motorist. The "far-right offset" creates conflicts for motorists
as to. whether or not to stop, when turning left from the side road when
confronted with a red signal indication on the main street. This,
configuration further complicates the operation because the distance
between each side road is of insufficient length to accommodate
storage vehicles trapped by the red signal indications.
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ATTACHMENT~ I TOREPORT#OES ll-O 3 .
1--of21
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Based on the physical, c()nstraints, we cannot recommend signalization of.this
intersection without realignmE3nt of Rose bank RoaçL Two independent traffic control
signals cannot be operated safely within the short spatial distance ofthe two
intersecting si~e roads. ' , .
I trust that the aforementioned will be of assistance to you and please call should,
you requir~ further information. " '
Yours truly,
, ,
ß" .."'.....".."
'BOb;~~' ".""
'Manager, Traffic Engineering & Operations'
. Transportation and Field Services Branch
Ips.
cc:
C. Curtis, Director, Transportation and Field Services
J:Walker, Coordinator, TrafficSignals '. . .
G. Borchuk, Project Manager, Traffic Engineering and Operations
. .
ATTACHMENT# ~
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TO REPORT# 055 I J-o3
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OPERA nONS & EMERGENCY
SERVICES DEPARTMENT
MUNICIPAL PROPER1Y &
ENGINEERING DIVISION
1:750
DATE
MAR 27/2003
OPTION #1
FULL RE-ALIGNMENT AND SIGNALIZATION
SCALE.
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TO REPORT# 0 es 11""3
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OPERATIONS & EMERGENCY
SERVICES DEPARTMENT
MUNICIPAL PROPER1Y &
ENGINEERING DIVISION
SCALE.
1:650
OPTION #2
MINOR RE-ALIGNMENT AND SIGNALIZATION
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DATE
MAR 27/2003
ATTACHMENT#
TO REPORT# oes II-ò 3
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OPERATIONS & EMERGENCY
SERVICES DEPARTMENT
MUNICIPAL PROPERTY &
ENGINEERING DIVISION
1:750
MAR 27/2003
OPTION #3
ALTERNATIVE DESIGN (TRAFFIC CIRCLE)
SCALE,
DATE,
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