API for historical traffic data? [closed]

问题:

Does anyone know of a public API for historical traffic data?

Some quick googling pulls up an API from Yahoo which offers real-time data, but I'd be curious if anyone hosts a service for historical data - i.e., what was the "severity" (one of the attributes the Yahoo API returns) for a given location at a given date and time.

(I'm going to guess that such a thing doesn't exist today, or at least no public options, as this would be an immense amount of data to store, but it never hurts to ask...)

回答1:

While yahoo has shut down its traffic apis, there are a number of companies providing traffic information.

• HERE from Nokia
• Traffic API from Microsoft
• Traffic API from MapQuest
• Predictive Traffic API from INRIX

回答2:

These guys certainly have the data, but I don't know how easy it is to get access to the API: http://inrix.com/developers