Trafiklab is an open data initiative of Sweden, exposing traffic and transportation data and APIs. A project of several government agencies and other companies, Trafiklab offers a large suite of APIs for real-time transit information for bus, subway, commuter train, and local path; travel planning services; current traffic status; current and planned transportation projects; environmental impact of travel options; locations and operating hours for bike service; parking facility informaiton; and more. RESTful, and some SOAP, APIs are available. API keys are required for most APIs.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.