Traffic Concerns on Scarden Avenue
Ward 14 - Scarborough Wexford
The Scarborough Community Council recommends the adoption of the following report
(January 23, 1998) from the Director of Transportation Services, District 4, subject to
the following amendments:
(1)strike out recommendation (1) and insert in lieu thereof the following:
"(1)an all-way stop control be installed at the intersection of Scarden Avenue and
Arkona Drive/Heaslip Terrace;" and
(2)add the following recommendation (4):
"(4)the appropriate by-law be amended accordingly.",
so that such recommendations shall now read as follows:
"It is recommended that:
(1)an all-way stop control be installed at the intersection of Scarden Avenue and
Arkona Drive/Heaslip Terrace;
(2)turn restrictions not be installed to restrict access to Scarden Avenue;
(3)the Toronto Police Service, 42 Division, receive a copy of this report and provide a
period of concentrated enforcement on Scarden Avenue; and
(4)the appropriate by-law be amended accordingly."
The Scarborough Community Council submits the following report (January 23, 1998)
from the Director of Transportation Services, District 4:
Purpose:
To address the concerns of petitioners relating to speeding and traffic volumes on Scarden
Avenue, and request that the Toronto Police provide speed enforcement on this road.
Funding Sources:
Not Applicable.
Recommendations:
It is recommended that:
(1)additional all-way stop controls not be installed for traffic on Scarden Avenue;
(2)turn restrictions not be installed to restrict access to Scarden Avenue; and
(3)the Toronto Police Service, 42 Division, receive a copy of this report and provide a period
of concentrated enforcement on Scarden Avenue.
Background:
Road and Traffic Services received a petition, on behalf of residents living on or near Scarden
Avenue, requesting the installation of all-way stop controls at all of the intersections on
Scarden Avenue. In addition, the petition requested that all turns be prohibited onto Scarden
Avenue from Warden Avenue and Birchmount Road during both the morning and evening
rush hours. Road and Traffic Services initiated a series of traffic studies relating to speeding
vehicles and traffic infiltration.
Discussion:
Scarden Avenue is a residential collector roadway located between Arkona Drive and
Birchmount Road, immediately north of Highway 401. A 40 kilometre per hour speed limit is
posted on this road with an all-way stop located on Scarden Avenue at Marlbank
Road/Heaslip Terrace. Traffic control signals exist at the intersections of Scarden Avenue and
Birchmount Road and Arkona Drive and Warden Avenue.
All-Way Stop Control:
The justification for the installation of an all-way stop control is based on a technical warrant
established by the Ministry of Transportation of Ontario (MTO), and adopted as the City
Policy by the former Scarborough Council.
Traffic studies conducted on Wednesday, September 10, 1997 on Scarden Avenue at the
following five intersections produced the following results which illustrate that the warrant's
vehicle volume requirements are not satisfied at these locations:
Study Hours : 7:30 to 9:00 a.m. and 4:00 to 5:30 p.m. |
Intersection on
Scarden Avenue At |
Highest
Hour
Recorded |
Total Approach
Vehicle Volume
For
Highest Hour
Recorded |
Vehicle Volume
Split
Major/Minor
Roads
Percentage |
Arkona Drive /
Heaslip Terrace |
8:00 to 9:00
a.m. |
281 |
64/36 |
Aragon Avenue
|
8:00 to 9:00
a.m. |
285 |
86/14* |
Tourmaline Drive,
West Intersection |
7:45 to 8:45
a.m. |
231 |
92/8* |
Corundum Crescent
|
4:30 to 5:30
p.m. |
228 |
96/4* |
Sunmount Road /
Tourmaline Drive |
4:30 to 5:30
p.m.
|
241 |
93/7 |
MTO - Warrant Requirements |
$ 350 |
# 65/35 for
4-way
# 75/25 for
3-way* |
The table indicates the warrant's vehicle volume requirements are not satisfied and in most
cases the vehicle volume split percentage are not met, therefore, all-way stop controls are not
warranted at these intersections.
All-Way Stop Control Integrity:
When used at the right location and under the right conditions, the stop sign is one of the most
valuable and effective control devices available to the Traffic Engineering Profession.
Therefore, it is important that the City maintain the integrity of the All-Way Stop Control
Warrant to ensure driver compliance. The following outlines the main reasons why the
installation of unwarranted all-way stop controls is not recommended.
(1)Most motorists are reasonable and prudent with no intention of maliciously violating
traffic regulations; however, when an unreasonable restriction is imposed, it does result in
flagrant violations. In such cases, the stop sign can create a false sense of security in a
pedestrian and an attitude of contempt in a motorist. These two attitudes can and often do
conflict, ultimately making the intersection less safe for both pedestrians and motorists.
(2)The City has an obligation to provide services in an environmentally conscious manner.
The installation of unwarranted stop controls not only undermines the MTO All Stop Control
Warrant but contributes to unnecessary fuel consumption and higher levels of noise and air
pollution. These pollutants most specifically impact those residents in the immediate vicinity
of the intersection.
(3)The All-Way Stop Control Warrant is incorporated in the Manual of Uniform Traffic
Control Devices. Therefore, as the installation of all traffic controls is governed by this
Manual, the installation of an unwarranted control could potentially place the City in a
position of liability if it was determined to be a factor in a collision
Intersection Characteristics:
If all-way stop controls were installed on Scarden Avenue, motorists would now be required
to stop in the front of homes in the area of the intersection.
We are bringing this to your attention as we have, in the past, received requests from residents
for the removal of stop signs in front of their homes. Some residents feel that these controls
will not only adversely effect the appearance of their homes but they will also lose some
privacy due to vehicles continually stopping in front of their homes.
Turn Restrictions:
An origin/destination study conducted on Wednesday, September 10, 1997 at two enter/exit
points to this area, Arkona Drive at Warden Avenue and Scarden Avenue at Birchmount
Road, revealed a significant number of motorists using Scarden Avenue and Arkona Drive as
a through route between Warden Avenue and Birchmount Road.
Our study results, in detail, are illustrated in the attached tables and a brief summary is as
follows:
Study Period |
Total Traffic Entering |
Total Through
Traffic |
Percentage |
7:30 to 9:00 a.m. |
262 |
187 |
71% |
4:00 to 5:30 p.m. |
424 |
189 |
45% |
However, automatic 24-hour traffic counts conducted at the two main enter/exit locations on
Scarden Avenue over a two-day period substantiate that this road, even with a high percentage
volume of through traffic, is still functioning within the guideline volumes suggested for a
residential collector roadway being between 1500-3500 vehicles/day. Our study results are as
follows:
Location on Scarden Avenue |
Study Date |
24-Hour Vehicle
Volume |
East of Arkona Drive |
Wed. Sep. 10,
1997 |
2788 |
|
Thu. Sep. 11,
1997 |
2806 |
West of Birchmount Road |
Wed. Sep. 10,
1997 |
2552 |
|
Thu. Sep. 11,
1997 |
2542 |
Guideline Volumes for Residential Collector Roadways |
1500 - 3500 |
We must emphasize that when considering the restriction of through traffic on a road, it is
very important to note the following:
(1)Any control which discourages through traffic will have an equally adverse effect on travel
routes for local residents as there are no exceptions to the restriction for residents.
(2)Any restriction installed to eliminate through traffic on a road will transfer this traffic to
other roads in the area. For example, if a turn restriction is installed on Scarden Avenue, the
traffic volume would likely be transferred to Cass Avenue, Carncastle Gate or other
residential roads in the community.
(3)Traffic controls tend to set precedents. Residents perceive actions taken for one road as a
warrant for similar actions on their road. Consequently, these controls can transform an area
into a traffic maze and reduce the aesthetic quality of the area or motorists may develop
"creative" alternatives to circumvent the restrictions.
Therefore, based on the existing through traffic volumes, the 24-hour vehicle volumes and the
above reasons, turn restrictions are not recommended at the intersections of Warden Avenue
and Arkona Drive and Birchmount Road and Scarden Avenue.
Speeding:
Automatic 24-hour speed studies conducted on Scarden Avenue at two locations over a
two-day period revealed that most motorists travelled within a "tolerable speed range", 1
kilometre per hour to 50 kilometre per hour for this 40 kilometres per hour speed limit
roadway. However, cases of excessive speeding were recorded.
Our study results, in detail, are illustrated in the attached graphs and a brief summary is as
follows:
Study
Location
on Scarden
Avenue /
Study Date |
Speed Ranges |
Total
Vehicles
Recorded |
85th
Percentile
Speed |
1 - 40 km/h |
41
-
50
km/h |
51
-
54
km/h |
55
-
60
km/h |
>
60
km/h |
West of
Aragon Ave.
Wed. Sep. 10,
1997 |
848 |
1267 |
242 |
116 |
92 |
2565 |
51
km/h |
Thu. Sep. 11,
1997 |
813 |
1290 |
254 |
154 |
89 |
2600 |
52
km/h |
East of
Corundum Cr.
Wed. Sep. 10,
1997 |
573 |
1085 |
302 |
203 |
108 |
2271 |
54
km/h
|
Thu. Sep. 11,
1997 |
578 |
1142 |
313 |
235 |
130 |
2398 |
54
km/h |
As this request was prompted due to speeding and through traffic on Scarden Avenue, we
must take this opportunity to emphasize that the All-Way Stop Control Warrant specifically
states that it should not be used as a speed control device or as a means of deterring the
movement of through traffic in a residential area.
Police enforcement is still the best means for controlling motorists' speeds. Therefore, since
cases of excessive speeding were recorded, selective police enforcement of the 40 km/h speed
limit on Scarden Avenue has been requested.
Collision History:
A review of the collision history on Scarden Avenue reveals six reported collisions over the
past five years, January 1, 1992 to December 31, 1996. A brief summary is as follows:
Year |
Total Reported Collisions |
Speed Related |
Personal Injuries |
1992 |
1 |
0 |
0 |
1993 |
0 |
0 |
0 |
1994 |
3 |
0 |
1 (Minimal) |
1995 |
1 |
0 |
0 |
1996 |
1 |
0 |
0 |
Although any type of collision is regrettable, we must highlight that six reported collisions
over five years are not considered an excessive number of collisions based on the function of
Scarden Avenue as a residential collector roadway.
Conclusions:
In summary, based on our study results and city policy, all-way stop controls are not
warranted on Scarden Avenue. In addition, turn restrictions are not recommended at the
intersections of Warden Avenue and Arkona Drive and Birchmount Road and Scarden
Avenue to restrict the movement of traffic on Scarden Avenue during the morning and
evening rush hours at this time. We believe that this measure would greatly inconvenience
area residents in this community.
However, since cases of excessive speeding were recorded, selective police enforcement of
the 40kilometre per hour speed limit on Scarden Avenue should be requested.
Contact Name:
Gary H. Welsh, P.Eng.,
Director, Road and Traffic Services, Works & Environment Department,
Telephone: 396-5061,
Fax: 396-5681,
E-mail: welsh@city.scarborough.on.ca
The Scarborough Community Council submits, for the information of City Council, the
following communication (October 9, 1998) received from Councillor Norm Kelly:
I am asking for your support for the installation of 3-way stop signs at the intersection of
Arkona/Scarden/Heaslip, in Scarborough Wexford, as recommended by staff.
I have held two public meetings on traffic concerns in that area, at which City Staff
(GaryWelsh/Bruce Clayton/Richard Noehammer) were present and supported the three-way
stop signs which would alleviate confusion at this intersection. Both meetings (March 11 and
June 10 of this year) were held at Lynngate Junior Public School. Over 1,640 flyers were
distributed and a hundred residents, collectively attended.
Nearby residents support the installation of the stop sign and are beginning to ask why this
long overdue safety feature has not been installed yet. So, your support is important.