Cobra Graph Detail On Travel

[woofgang]

Does anyone know how they are measuring car use for the transport graph?

[bednobs]

I saw this answered here the other day as ANPR

[woofgang]

that makes sense, thanks

[fiction-factory]

If not ANPR, there are traffic control cameras /counters on motorways and some roads. Maybe they have maybe 100 volunteers/students at various points doing surveys- would make a good sampling/stats project

[Hopkirk]

I suspect Apple and Google are involved somewhere

[fiction-factory]

They do use those for one of the graphs they sometimes show for walking and car journeys- based on routeplanner type searches

[woofgang]

I thought Apple maps had been mentioned....

[fiction-factory]

Yes, that's what I meant. Maybe Google maps as well because I wondered how many mischief makers would next day type in John O Groats or Lands End

[Hopkirk]

For traffic flows on Google Maps, they use data from Android phones. Presumably they have an algorithm to disregard the boy on his bike, the milkman on his round and the passengers on a bus.

Perhaps they are just using the same information to assess the level of car use.