---
title: "W3C-VISS"
date: 2021-07-04T13:29:46+0000
weight: 2
---

When using VSS in an automotive tech stack, a question is which protocols and technologies to use to *access* VSS signals.

The W3C Vehicle Information Service Specification (**VISS**) is an open standard, specifying a protocol to access VSS data via websocket (VISSv1, VISSv2) or HTTP (VISSv2).

To learn more check

 - [Vehicle Information Service Specification (VISS) V1](https://www.w3.org/TR/vehicle-information-service/)
 - [Vehicle Information Service Specification (VISS) V2](https://github.com/w3c/automotive/),  still under active development
