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Traffic Safety Engineering

There is no silver bullet that will end traffic injuries and fatalities. Human error is inevitable and yet unpredictable. Safety engineering is about designing the transportation system to anticipate human error so the consequence is not severe injury or death.

Through ongoing review of collision data, planners and engineers identify and develop projects designed to improve safety on Edmonton streets. These engineering changes provide results that we can document. Here is a simple example: If a mid-block left-turn across a busy road results in 13 collisions each year, by eliminating that turning point, we reduce collisions by 13 and have prevented injuries and possibly deaths.

Engineering improvements to traffic safety include installation of:

  • Protected-only left turn phases at signalized intersections to reduce left-turn-across-path collisions.
  • Pedestrian signals, crosswalk markings, and pedestrian amber flashers at pedestrian crossings to improve pedestrian safety
  • Driver-feedback signs to let drivers know if they are speeding
  • Retroreflective tape and additional traffic signal fixtures to improve the signal visibility at signalized intersections
  • Right-turn merge redesign to increase visibility and reduce rear-end collisions
  • Speed limits set to safe levels
Stop Signs

By coming to a complete stop, drivers are more likely to see pedestrians, cyclist and other vehicles. 

In 2017,

  • Yield signs were converted to stop signs at 33 locations
  • Two way stops were converted to four way stops at 10 locations
  • New stop signs were installed at 10 locations

2018 Locations

Conversion from Yield to Stop Sign

  • 133 Avenue NW & 37 Street NW
  • 12 Avenue NW & 32A Street NW
  • Riverbend Road NW & 148 Street NW
  • Cameron Heights Way & Cameron Heights Drive
  • 14 Avenue NW & 32 Street NW
  • McLeod Road NW & 55 Street NW
  • 18A Avenue NW & 48 Street NW
  • 147 Avenue NW & 21 Street NW
  • Terwillegar Common NW & Taylor Green NW
  • 165 Avenue NW & 59A Street NW
  • Cunningham Way Way & Cunningham Drive SW
  • 26 Avenue NW & 38 Street NW
  • 27 Avenue NW & 112 Street NW
  • Schonsse Drive NW & 76 Street NW
  • Tomlinson Common NW & Tomlinson Way NW
  • 73 Avenue NW & 79 Street NW 
  • 20 Avenue NW & 32 Street NW
  • Whitelaw Lane NW & Whitelaw Drive NW
  • 119 Avenue NW & 39 Street NW
  • Savaryn Drive SW & 90 Street SW
  • 48 Avenue NW & 204 Street NW
  • 11 Avenue SW & 80 Street SW
  • Laurel Neighborhood Stage 14 & 15
  • 87 Avenue NW & Groat Road NW
  • University Avenue NW & 107 Street NW
  • 78 Avenue NW & 107 Street NW
  • 66 Avenue NW & 105A Street NW
  • 63 Avenue NW & 105A Street NW
  • 104A Avenue NW & 46A Street NW
  • 92A Avenue NW & Ottewell Road NW
  • 37A Avenue NW & 117 Street NW
  • Cahley Way NW & Cameron Height Way NW
  • 56 Avenue NW & 36 Street NW
  • 53 Avenue NW & 36 Street NW
  • 52 Avenue NW & 47 Street NW
  • 55 Avenue NW & 48 Street NW
  • 51 Avenue NW & 42 Street NW
  • 109A Avenue NW & 165 Street NW
  • 120 Avenue NW & 34 Street NW
  • 162A Ave NW & 109 Street NW
  • 12 Avenue NW & 39 Street NW
  • 91 Avenue NW & 154 Street NW
  • 91 Avenue NW & 155 Street NW
  • 166 Avenue NW & 87 Street NW
  • 164 Avenue NW & 87 Street NW
  • Bulyea Road NW & Bulyea Road NW
  • 63 Avenue NW & 126 Street NW
  • 63 Avenue NW & 127 Street NW
  • 70 Avenue NW & 98 Street NW
  • 72 Avenue NW & 98 Street NW
  • 36 Avenue NW & 42 Street NW
  • 88 Avenue NW & 93 Street NW
  • 96 Avenue NW & 152 Street NW
  • 82 Avenue NW & 75 Street NW
  • 122 Avenue NW & 128 Street NW
  • 106 Avenue NW & 92 Street NW
  • 31 Avenue NW & 115 Street NW 

Conversion of Two-way Stop to Four-way Stop

  • 32 Avenue NW & 48 Street NW
  • Trumpeter Way NW & 207 Street NW
  • 17 Avenue SW & Rutherford Road SW
  • Washburn Drive SW & 174 Street SW
  • 103 Avenue NW & 120 Street NW
  • 171 Avenue NW & 112 Street NW

New Stop Signs  

  • 89 Avenue NW & 152 Street NW
  • 135A Avenue NW & 119 Street NW
  • 17 Avenue NW & 85 Street NW
  • 108 Avenue NW & 117 Street NW
  • 86 Avenue NW & 93 Street NW
Pedestrian Signals and Amber Flashers

In 2016, besides the pedestrian-crossing upgrades done in 13 school zones, pedestrian signals or amber flashers were installed at 13 locations. In 2017, upgrades were done at the following locations.

101 Street & 105A Avenue Signal
62 Street & 106 Avenue Signal
63 Street & 101 Avenue Signal
124 Street & 108 Avenue Signal
156 Street & 97 Avenue Signal
82 Street & 128A Avenue Signal
75 Street & 78 Avenue Signal
Millwoods Road & 87 Street Signal
76 Avenue & 105 Street Flasher
90 Avenue & Saskatchewan Drive  Flasher
91 Avenue & Saskatchewan Drive Flasher
163 Street & 92 Avenue Flasher
Kingsway & Tower Road Flashing Beacon
165 Avenue & 50 Street Flashing Beacon
153 Avenue & 139 Street Flashing Beacon
106 Street south of 118 Avenue Flashing Beacon
99 Avenue & 149 Street Flashing Beacon
Left Turn Signal Phase Improvements

Improving left-turn signal timing can help reduce potential conflicts.

Permissive phase: drivers must yield to oncoming traffic and find an opportunity to make a left turn as traffic allows.

Protected phase: drivers can turn left without crossing the path of oncoming vehicles or other road users. Providing a protected left-turn phase can reduce left-turn collisions by up to 99%. There have been 70 locations with protected signal phase improvements since 2009 and there has been a steady decline in the number of left-turn across path collisions in Edmonton.

Intersections Completed in 2016

  • 111 Avenue NW & 124 Street NW
  • 51 Avenue NW & Calgary Trail Southbound
  • Windermere Boulevard SW & 170 Street SW
  • 23 Avenue NW & 111 Street NW
  • 76 Avenue NW & 83 Street NW
  • Whitemud Drive Eastbound & 122 Street NW
  • Yellowhead Tr Westbound & Victoria Trail
  • 23 Avenue NW & 91 Street NW
  • Fort Rd & Wayne Gretzky Dr
  • Sherwood Park Freeway Westbound & 50 Street NW
  • 107 Avenue NW & Groat Road Northbound
  • 118 Avenue NW & 97 Street NW
  • 137 Avenue NW & 82 Street NW
  • 160 Avenue NW & 97 Street NW

Intersections Completed in 2017

  • 87 Avenue & 178 Street
  • 72 Avenue & 114 Street
  • 23 Avenue & 66 Street
  • Yellowhead Trail & 82 Street (SB)
  • Yellowhead Trail & 82 Street (NB)
  • 137 Avenue & Victoria Trail
  • 78 Avenue & 75 Street

Intersections Completed in 2018

  • Yellowhead Trail & 82 Street 
  • Yellowhead Trail &​​​​​​​ 82 Street 
  • 111 Avenue &​​​​​​​ 149 Street 
  • 111 Avenue &​​​​​​​ 149 Street 
  • Stony Plain Road &​​​​​​​ 178 Street 
  • Millwoods Road & 91 Street ​​​​​​​
     

Intersections Scheduled for Completion in 2018

  • 167 Avenue - 127 Street
  • 167 Avenue - 127 Street
  • 153 Avenue - 82 Street 
  • Mark Messier Trail - 156 Street
  • 153 Avenue - Castledowns Road 
  • 144 Avenue - 66 Street 
  • 160 Avenue -​​​​​​​ 97 Street 
  • 160 Avenue -​​​​​​​ 97 Street 
  •  137 Avenue -​​​​​​​ 127 Street
  •  137 Avenue -​​​​​​​ 127 Street
  • 137 Avenue -​​​​​​​ 97 Street 
  • 137 Avenue -​​​​​​​ 82 Street 
  • 153 Avenue -​​​​​​​ Manning Freeway

 

Right Turn Channel Upgrades

In order to reduce the number of rear-end collisions on channelized right-turn lanes, upgrades can be made to the design of existing right turn channels. Factors such as traffic volumes, pedestrian volumes, truck volumes, sight lines and turning radius are all considered in the upgrade of right-turn channels. Overall there has been a 75% reduction in collisions at upgraded sites.

Intersections Completed in 2016

  • Windermere Blvd SW & 170 St North
  • 23 Avenue & Terwillegar Dr Northbound
  • Mill Woods Road & 91 Street

Intersections Completed in 2017

  • Stony Plain Road & 184 Street
  • 34 Avenue & Gateway Boulevard
  • 63 Avenue and 91 Street 
School Zone Safety Reviews

Traffic safety at schools is being reviewed using sophisticated video-analytics techniques. When potential problems are identified, engineers can choose specific countermeasures that are tailored to the concerns at each school.

The 13 schools reviewed and upgraded in 2016 were:

Ward 1: Youngstown School
Ward 2: Elizabeth Finch School
Ward 3: Dunluce School
Ward 4: Edmonton Christian Northeast School
Ward 5: Bessie Nichols School
Ward 6: Edmonton Christian West School
Ward 7: St. Matthew School
Ward 8: Mckernan School
Ward 9: Johnny Bright School
Ward 10: West Brook School, Mount Pleasant School
Ward 11: Greenview School
Ward 12: Michael Strembitsky School

In 2017, 24 schools were reviewed and upgraded.

Ward 1: Annunciation Elementary School | Meadowlark School
Ward 2: Katherine Therrien Elementary School | Inglewood School
Ward 3: St. Philip School | Lago Lindo School
Ward 4: Fraser School | Kirkness School
Ward 5: Good Shepherd Elementary School | Ormsby School
Ward 6: Edmonton Menorah Academy | Grandin Elementary School
Ward 7: Glengarry School | Delton School
Ward 8: Suzuki Charter School | Hardisty School
Ward 9: George P. Nicholson School | Esther Starkman School
Ward 10: St. Boniface Elementary School | St. Teresa Elementary School
Ward 11: Donnan School | Sakaw School
Ward 12: Mary Hanley School | A. Blair McPherson School

In 2018, 27 schools were upgraded:

Ward 1: Ecole Notre Dame | Sherwood School
Ward 2: MAC Islamic School | St. Pius X
Ward 3: Bishop Savaryn School | Florence Hallock School
Ward 4: St. Dominic | St Bonaventure / John D. Bracco School
Ward 5: St. Justin / Thorncliffe School | Our Lady of the Prairies
Ward 6: John A. McDougall School | St. Teresa of Calcutta School
Ward 7: Abbott School | Balwin School
Ward 8: Rutherford School | Garneau School
Ward 9: George H. Luck School | St. Monica School
Ward 10: Sweet Grass School | Grandview Heights School
Ward 11: J. H. Picard School / Waldorf Independent | Millwoods Christian School
Ward 12: Minchau School | Crawford Plains School

2019 schools to be upgraded:

Ward 1: Winterburn School | Holy Cross Académie Internationale
Ward 2: St. Timothy | Major General Griesbach School
Ward 3: Father Leo Green School | Bishop Greschuk School
Ward 4: Overlanders School | Anne Fitzgerald School
Ward 5: Elmwood School| Sister Annata Brockman School
Ward 6: St. Vincent School / Westminster School | Victoria School of Performing and Visual Arts
Ward 7: St. Vladimir School | Kildare School
Ward 8: Our Lady of Mount Carmel School/ Queen Alexandra School | Holyrood School
Ward 9: Tempo School / Brander Gardens  School| St. John XXIII School
Ward 10: St. Augustine School| Duggan School
Ward 11: St. Elizabeth School / Grace Martin School | St. Richard School
Ward 12: Pollard Meadows School| Holy Family School

Driver Feedback Signs

In keeping with the Vision Zero Edmonton goal of zero traffic fatalities and serious injuries, the City is installing driver feedback signs (DFS) at various locations throughout Edmonton. Currently there are 140 DFS signs installed in School Zones and on arterial and collector roadways identified as having a high collision risk, and on streets where speeding is a problem. Using radar, DFS measure vehicle speed and then display it with the goal of increasing compliance to the speed limit. DFS monitor compliance and may indicate when manned or automated photo enforcement should be deployed to the area.

In addition to driver feedback signs, Traffic Safety also utilizes portable speed display trailers which are easily moved from one location to another in response to identified speeding concerns.

Traffic Signal Visibility

The visibility of traffic signals can be improved by installing new backboards around signal heads, adding retroreflective tape to backboards, or installing additional signal heads. Making traffic signals more conspicuous can help reduce collisions in situations where drivers have had difficulty clearly seeing the traffic signals. Collisions can be reduced by a range of 7% to 15% or greater following visibility upgrades. In 2016, signal visibility upgrades were done at 14 locations and additional overhead signal lights were added to 10 locations. In 2017, retroreflective tape was added to 18 locations.

For More Information

Traffic Safety

Telephone

780-495-0371

Fax 780-495-0383
Email transportationoperations@edmonton.ca

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