Martin Grove & Porterfield

Traffic volume14-hour count · Nov 29, 2023

The south leg carries the load — 5,282 northbound vehicles, or 51% of everything entering — while the west leg brought 254. The afternoon peak is the heavier one — 1,655 vehicles in the hour from 4:00 p.m., 12% above the morning peak from 7:45 a.m. (1,484). Heavy vehicles made up 3.9% of traffic (typical: 3.2%). The citywide median for a 14-hour count is 16,177 vehicles. The count is 3 years old; the City recounts intersections on an ad-hoc schedule, so volumes may have shifted since.

Peak hours: 1,484 vehicles in the hour from 7:45 a.m. and 1,655 from 4:00 p.m. (approach figures are vehicles entering from that leg over the whole count — one day's traffic, not an annual average).

Collisions 2016–2025 · within 65 m

2024 was the peak year (5 collisions), and 2025 closed with 4. 23% of collisions here involved an injury, above the 15% citywide. 6 drivers failed to remain at the scene — 17% of collisions, in line with the citywide 16%. People walking or cycling were involved in 6% of collisions here (citywide: 5%). Since January 2026, 1 more collision has been reported; they sit outside the ranking window. The most recent report on file is from Apr 25, 2026.

The KSI record for this intersection is empty back to 2006.

A collision counts when its recorded location is within 65 m of the centreline node, intersection-related or not. KSI = killed or seriously injured, the basis of the danger rankings; records can lag a year or more, so the current year is outside the window. How collisions are counted.

Speeds here, last measured in 2016

The City's counter on Porterfield Rd between Billcar Rd and Delsing Dr (383 m away) recorded an average of 38 km/h in its 24-hour count in November 2016; 85% of drivers were at or under 47 km/h. That segment carries about 800 vehicles a day. The reading is 10 years old; the City counts on request rather than on a schedule.

Midblock counts are automatic counters laid across the road for one to seven days; 85% of drivers were at or below the 85th-percentile speed. A reading is not the speed through the intersection itself, and posted limits are not in the count data. How speeds are read.

The crossing

Signal 1886, activated 2001 · accessible (audible) pedestrian signal · leading pedestrian interval North/South/East/West

Not within a walk: a grocery store, a community centre, licensed child care or a care or retirement home.

• Groceries and food1/30

  2 within 1 km

• Transit10/28

  2 stops within 300 m · 5 routes within 1 km

• Library and places to go2/14

  library 1.5 km away

• Parks and recreation2/10

  nearest park 0.5 km

• Schools and child care3/8

  1 school within 500 m

• Crossing on foot8/10

  traffic signal · head start for people walking · accessible signals

Our own measure, not a licensed walkability rating: every point comes from a City dataset listed under Sources, and the six parts add up to the score. How the score is built · the full ranking.

Toronto Police place four thefts from vehicles and no bicycle thefts at this intersection in 2016–2025 — about the median for an intersection with any reported theft.

Police offset every occurrence to the nearest intersection before publishing, so these are thefts on the streets and premises around this node, not necessarily at the corner itself. Other offences are published by neighbourhood only — see West Humber-Clairville.

• Traffic counts: City of Toronto, Traffic Volumes – Multimodal Intersection Turning Movement Counts, latest count Nov 29, 2023.
• Serious-injury collisions: City of Toronto / Toronto Police Service, Motor Vehicle Collisions involving Killed or Seriously Injured Persons, records through Oct 11, 2026.
• All collisions: Toronto Police Service, Traffic Collisions Open Data, records through Sep 30, 2026.
• Cameras: City of Toronto, Red Light Cameras.
• Speeds and calming: Midblock Vehicle Speed, Volume and Classification Counts.
• Within a walk: DineSafe (Toronto Public Health), inspections Nov 2023 – Oct 2026; Park Washroom Facilities, Washroom Facilities in City Buildings, Automated Public Toilets, Park Drinking Water Sources; Ministry of Health Service Provider Locations (Ontario) — Contains information licensed under the Open Government Licence – Ontario.; City of Toronto School Locations, Parks and Recreation Facilities, Library Branch General Information, Places of Interest and Attractions, Traffic Signals Tabular, Neighbourhoods.
• Thefts: Toronto Police Service, Theft From Motor Vehicle and Bicycle Thefts open data, occurrences offset by police to the nearest intersection, records through Jun 30, 2026.
• Ward and BIA: Wards and Elected Councillors (Ward 1 councillor), Business Improvement Areas.
• Getting there: TTC Routes and Schedules (GTFS), GO Transit GTFS, UP Express GTFS, VIA Rail GTFS, MiWay (Mississauga) GTFS, Durham Region Transit GTFS, Brampton Transit GTFS, York Region Transit GTFS, Bike Share Toronto, Cycling Network; Topographic Mapping – Physical Area of Parking Lots, Green P Parking with Parking Occupancy, City-Operated EV Charging Stations, Street Furniture – Bicycle Parking, Bicycle Parking Racks, High-Capacity Bicycle Parking, Indoor Bike Stations. Data provided with permission of Metrolinx where GO and UP Express appear.
• Coordinates: 43.72218, -79.58501 · centreline node 13454996.