API for historical traffic data? [closed]

Answer 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

Answer 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