You Doored a Cyclist: What It Costs and Who Pays

Open a car door into a cyclist's path in Canada and the law starts from the position that the crash is your fault: in most provinces, dooring is a specific offence under highway traffic legislation — for passengers as well as drivers. The injuries drive the money: a doored cyclist goes over the door or into live traffic, and the resulting head and orthopedic injuries regularly produce claims from the low six figures to more than $1 million.

The policy that answers is your auto policy — even though the car was parked. Here's the scenario, the fault rules, and the limit math.

The scenario#

A composite of the dooring claims Canadian auto insurers see:

You parallel park downtown, a few minutes late for a meeting. You glance at the side mirror — quickly — and swing the door open across the painted bike lane. A 33-year-old commuter on an e-bike doing 25 km/h has no time to brake. She hits the door's edge, vaults over it, and lands on her shoulder and head in the traffic lane. Her helmet cracks. The car behind stops in time. Barely.

Fractured scapula and clavicle needing surgical plates. Facial lacerations. A concussion that becomes six months of post-concussion symptoms. She's a project manager earning $110,000 who can't work for five months and returns part-time after that.

Her claim: $900,000 — income loss, future care, and pain and suffering. The police ticket you at the scene. The civil claim starts from that fact.

The law: dooring is the door-opener's offence#

The details vary by province, so here's the honest general picture:

That last row matters more than it looks. Because dooring arises from the use of the vehicle, the claim runs through auto insurance, with everything that implies: your auto insurer defends, your auto limit applies, and the claim lands on the vehicle's insurance record.

What dooring injuries cost#

A cyclist has no crumple zone. The bike stops instantly; the rider doesn't. Ranges below are editorial estimates reflecting the pattern of Canadian injury claims, not quotes or predictions:

Two facts push dooring claims up this table. First, the injury mechanics: heads, faces, and shoulders take the impact, and head injuries carry the largest future-care awards in Canadian law. Second, the victims: urban cyclists skew toward working-age commuters with real incomes — and income loss is the biggest line in most serious Canadian injury claims.

Two trends are making it worse. Cities keep painting bike lanes beside parking lanes, which puts riders in the door zone by design. And e-bikes have raised average speeds — more energy in the collision, worse injuries at the bottom of it.

Which policy responds — driver or passenger#

If you opened the door: your auto policy's third-party liability section responds. It pays your legal defence (typically on top of the limit) and the settlement or judgment up to your limit. Most Canadian drivers carry $1 million; provincial statutory minimums are far lower.

If your passenger opened it: typically, the claim still routes through the vehicle's auto policy, because the door-opening arises out of the use of the insured vehicle — though the exact path depends on the province and the policy wording. The passenger's own home or tenant policy can also be drawn in as a second layer. If your teenager doors a cyclist from the back seat, expect your auto insurer to be the one answering the phone.

Either way, a paid claim generally follows the vehicle owner's insurance record. The premium consequences are real — but they're a rounding error next to the judgment risk.

If it happens, do the basics: stay, call 911 if anyone is hurt, exchange information, and notify your insurer the same day. Don't negotiate at the curb — a shaken cyclist who says "I'm fine" hasn't seen the MRI yet, and a payment you offer on the spot settles nothing.

The limit math when it goes really wrong#

Doorings carry a nasty multiplier: the rider is often thrown into traffic. Run the composite forward one second — the car behind doesn't stop, or swerves into the oncoming lane.

Now there are two injured claimants, or three, plus vehicle damage, all arising from the same event — and every one of them shares your single liability limit. A $900,000 cyclist claim plus a $600,000 claim from the second collision is $1.5 million against a $1 million policy. The half-million left over is enforced against you: registered against your home, collected from savings, garnished from pay.

One door, opened one second too soon. And unlike a highway crash, there's no speed, no weather, and no bad luck to point at — just a hand on a handle and a mirror nobody checked. Judges and juries find that version of events very easy to understand.

How umbrella coverage changes the outcome#

A personal umbrella policy sits over your auto policy as well as your home policy — one extra limit across both. Typical cost is roughly $200–$300 per year for the first $1 million and about $50–$75 per year for each additional $1 million — estimates based on typical broker pricing, not quotes.

In this scenario it catches the part of the judgment above your auto limit, keeps paying defence costs after the base policy is exhausted, and — critically — covers the multi-victim pileup where one limit would otherwise be split three ways.

The bottom line#

The cheap fix is a habit: open the driver's door with your far hand — the "Dutch reach" — which turns your body toward the mirror and puts the bike lane in your line of sight. Teach it to your passengers and your kids, because their door is your policy.

The financial fix is a number. Dooring is one of the few everyday, engine-off, two-second acts that can generate a seven-figure claim, and it runs through an auto limit most drivers accepted by default years ago. Check yours — and price an umbrella before you're the reason a cyclist meets the pavement.