Kerb tells you where you can legally leave your car for £0 on London streets — right now. Not "paid parking ended". Actually, legally, free.
Every parking app in London answers the wrong question. They tell you when the meter stops charging. That's not the same as when you can leave your car.
On thousands of Camden streets, Mon–Fri 8:30–18:30 is paid parking. And then, right when it ends, 18:30 to 23:00 becomes residents-permit only. If you park at 19:00, you'll wake up to a £110 penalty.
Kerb reads the actual restrictions. Every colour on the map is a legal claim we can defend.
Three parts, one job: turn opaque council data into a colour you can trust.
We ingest raw bay-level data from Camden's open data portal — every restriction type, every schedule string, every CPZ. Nothing is guessed. Everything is preserved.
A pure function that reads every active restriction — paid windows, permit overlays, midnight-crossing schedules, blue-badge exemptions — and returns one answer.
The map draws the actual kerb line, coloured by legality at the moment you're looking. Move the time scrubber and the whole map recolours.
Cyan means you can leave your car and walk away. Magenta means it becomes free within the hour. Yellow is paid. Black is a proper "don't even think about it".
Grey with hatching means we don't know yet — and we say so. Kerb never guesses "free" when it doesn't know the rules.
"Paid ends" ≠ "Free begins". A segment is free only when no active restriction currently applies to an ordinary car.
Twenty test fixtures enforce this. If a permit window overlays a paid window, the engine returns Permit only, not Free. Every time.
Restrictions are written against Europe/London wall-clock time. When BST ends in October, "Mon-Sat 08:30-18:30" doesn't shift with it. Neither does Kerb.
Midnight-crossing schedules — permit 18:30 → 08:30 next morning — are resolved correctly.
Every segment carries its own confidence — High, Medium, Low, or Unknown. If we couldn't parse the schedule string, we demote. We never upgrade.
The map hatches unknown segments. The detail view names the source.
A disabled bay is Special use for a car and Free for a blue-badge holder. A permit-only bay is Permit only for a stranger and Free for the resident. You tell Kerb who you are.
Source: Camden Council parking bay dataset · confidence: High
Data checked: 04:12 this morning · According to current council restriction data. Always check the sign at the kerb.
Join the waitlist. We'll email you when Camden opens up, and when your borough is next.
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