This page intends to give an overview of the specifications and a starting point for comparing them

Automat Common Vehicle Information Model (CVIM)

link: https://automat-project.eu/content/open-cvim-specification

Automat Cybersecurity Framework

look at  Automat Cybersecurity Overview

Sensoris

status overview (one year old, but useful)

W3C VSS

look at this page: Connected Services: W3C VISS/VSI specification status