We are glad to announce that our two Open Transport API specifications have been submitted and accepted by ProgrammableWeb, the Web’s defacto journal of the API economy.
https://www.programmableweb.com/api/open-transport-initiative-uk-rest-api-v10
On our listing page we have explained that the Open Transport initiative provides two different Open Standard API specifications for free usage since v1.0:
1. Customer-account
A standard way to facilitate peer-to-peer transport data sharing and account interoperability, allowing the customer to combine all their transportation, mobility and associated data in one place. Including: purchase, concession, and usage features in addition to operators, transactions, latitude and longitude, vehicle, and discount data.
2. Operator-info
A centralised look-up for all transport operators. This provides a transport directory service with unique reference information about each mode of transport or mobility organisation, including any publicly available Customer-account API URLs.

Both specifications are Open Standards, meaning they have been made available on Swaggerhub for usage without conditions or fees.
