Where else traffic numbers come from

Public data and APIs for traffic, checked on 23 September 2026. Governments publish yearly counts as files. Live street level traffic anywhere in the world comes from three companies who get it from phones and connected cars and sell it. None of them cover a side street in a small town. That is the gap this project sits in.

Canada and Ontario

SourceWhat it givesLiveCost
Ontario MTO provincial highway traffic volumesAnnual average daily traffic per highway segment, 2021 to 2024, CSV or PDF. Highway 26 through the former Township of Meaford was 5,400 vehicles a day in 2019.NoFree
Ontario daily highway traffic dataDaily volume and vehicle class from 60 permanent count stations across the province.NoFree
Canada open data, traffic volumeOlder provincial traffic volume set, 1998 to 2010, CSV.NoFree
Canada open data, commercial vehicle flowsTruck traffic by road network, with annual daily truck counts.NoFree
Statistics Canada traffic flow dashboard
The closest thing a government has done to what Trafica does, and it was shut down.
Vehicle counts from traffic cameras using a computer vision detector, Toronto, Calgary, Montreal, Ontario and Alberta. Discontinued 16 June 2026. History only.NoFree
Grey County roadsThe county road network as a map layer. No county traffic counts were found online.NoFree

Live traffic, commercial, worldwide

SourceWhat it givesLiveCost
TomTom Traffic APILive flow and incidents on mapped roads, from connected cars and phones, worldwide.YesFree daily tier, then paid. Pricing revised July 2026.
HERE Traffic APILive flow and incidents, worldwide.YesFree tier, then about US$3 per 1,000 requests. Prices have risen yearly.
Google Maps Platform, Routes APITravel times with live traffic, worldwide. No raw counts or speeds per road.YesMonthly credit, then US$2 to US$40 per 1,000 requests by tier.

Open data elsewhere

SourceWhat it givesLiveCost
UK Department for Transport road traffic statisticsCounts by vehicle type, road and area for Great Britain, with an open API and no key. The model of what an open traffic API should look like.NoFree
Transport for London unified APILondon transport data including roads, free key.YesFree
US Highway Performance Monitoring SystemEvery state reports yearly traffic to the federal system, published as files per state.NoFree