R A D I U S

Neighbourhood Safety Index — Montreal demerged municipalities
PROTOTYPE · powered by official open data
Source: SPVM Actes criminels · 2015 – May 2026
Know what's happening on your block.
RADIUS shows residents recent incidents near any address — plus a safety score for the area — all from real, official data. A live safety feed + a steady safety score, focused only on crime, property & physical safety.
What it isA neighbourhood-safety monitor: a live feed of recent crime & property incidents near you, paired with a stable Radius Score for any address. Real on day one — built on official open data, no user posts required.
Who it's forResidents & homeowners in Montreal's demerged municipalities — Westmount, Hampstead, TMR, Côte-Saint-Luc, Dollard — where property crime is the #1 everyday worry. Start hyperlocal, expand outward.
Why nowOfficial data is finally rich enough to deliver value instantly; break-ins are climbing (Westmount at a 5-year high); and no focused, bilingual, hyperlocal safety tool exists for these communities.
About this demo — what you're looking at & where the data comes from

This is an early proof-of-concept for RADIUS — our proposed neighbourhood-safety app for Montreal's demerged municipalities. It was built quickly to answer one make-or-break question: can we deliver something genuinely useful from day one using only free, official data — before a single user posts anything? The answer is yes, and everything below is real data, not mock-ups.

What you're looking atReal reported crime — break-ins, vehicle theft, theft-from-vehicle, mischief, robbery — across 5 towns: Westmount, Hampstead, TMR, Côte-Saint-Luc & Dollard-des-Ormeaux. The map & stats show the last 3 months — this is a monitoring tool for what's happening now, not a where-to-move guide; the trend chart keeps the multi-year backdrop.
Where the data comes fromThe SPVM (Montreal police) "Actes criminels" open dataset, published free by the City of Montreal. It's official, refreshed daily, and 11 years deep. Each incident is pinned to the nearest street corner for privacy.
Why it mattersIt proves the core concept: an automated "Radius Score" can map a neighbourhood's safety profile and trends from official data alone — so we can launch with real value and no reliance on user-generated content.
Keep in mindThis is an internal prototype for discussion. Official data carries a ~3-day reporting lag — so think "recent & historical," not minute-by-minute live alerts. Real-time is a later layer.

Radius Score — what a user sees for one address

The product in one glance: a location's safety profile, scored from real data. Pick a sample location ▸
–
Radius Score / 100
–
Reported incidents within 500 m · rolling 12 months
Within 500 m · rolling 12 months
How it's scored (shown for transparency): weighted density of reported incidents within 500 m over a rolling 12 months, compared with the Island-of-Montreal average for an equally-sized area. Higher = safer. A rolling-year base keeps the score stable — the incident feed above shows the last 3 months. Illustrative methodology on real SPVM data — not an official rating, and deliberately a descriptive risk band, not a stigmatising letter grade.

Recent incidents — last 3 months

Residential break-ins by year

Crime mix · last 3 months (by town)

Data roadmap — verified feeds we can layer in (all real, official & free)

The map & charts above use only the SPVM crime feed. A deep scan surfaced a full stack of other official, free, verified public feeds — enough to power both halves of the product from day one: a real-time alert stream and a historical safety score, with zero user-generated content.

● Live-alert layer — real-time, no users needed

HIGH
Major road closures (Québec 511 / MTQ) — full closures & major incidents on the arteries around the munis.
HIGH
Pelmorex NAAD — AMBER & civil / public-safety emergencies, geofenced. Verified streaming live.
MED
Hydro-Québec outages — live outages + restoration ETA. ⚠ excludes Westmount.
LATER
Neighbour reports (UGC) — the phase-2 bet: the live signal that isn't already on every phone.

● Radius Score layer — the historical safety profile

LIVE
SPVM crime — the backbone (in use now; live CKAN API available).
HIGH
SIM fire interventions — fire/hazard + medical-call density; names every demerged muni.
HIGH
StatCan Crime Severity Index — the benchmark: "X% safer than the Montreal average."
HIGH
Road collisions — dangerous-intersection / pedestrian & cyclist risk scoring.
MED
311 reports, prior road incidents — light context enrichment (partial coverage).

Deliberately out of v1 scope: weather alerts (already pushed to every phone via Alert Ready), live traffic, transit and air quality. RADIUS stays focused on crime, property & physical safety — not a general-purpose alerts app.

Three things the team should know:
  • Westmount power-outage blind spot — it runs its own municipal grid, so Hydro-Québec outage data won't show Westmount (and our partner lives there).
  • Demerged local streets are a recurring gap in road datasets. Feeds that cleanly cover all five munis: SPVM crime, SIM fire, emergency alerts & major closures, Hydro (minus WM).
  • No sex-offender map. Canada has no public registry (unlike the US) — legally unavailable and reputationally toxic. Dead ends, too: ambulance data, ParkUsher API, boil-water feeds, bike-registry (not usable / partnership-gated).