Hai cercato la traduzione di firma del conductor da Spagnolo a Inglese

firma del conductor
driver's signature

masa del conductor
mass of the rider

edad del conductor:
driver's age:

asiento del conductor
driver’s seat

requisitos del conductor.
conditions for the driver.

nombre del conductor:
name of driver:

además, deberá ser posible incluir en los citados documentos inscripciones adicionales hechas a mano, tales como la firma del conductor.
it shall also be possible to add handwritten notes, such as the driver's signature, to these documents.