Optimization API Maximum speed

I want to be able to control vehicle speed with optimization API, in the direction API we send maximum_speed attributes, I tried to send it with vehicle data in optimization, not work, even it is not in the document
as a note, in the request, I send only 1 vehicle ber request


as of now, the maximum_speed parameter is not available for use with the optimization endpoint. At some point, it may be available for the matrix endpoint, at which point it might get introduced to the optimization endpoint as well.

You can, however, specify your own custom time/distance matrix to the endpoint. Have a look at the docs for details.

Best regards