Plus Safety Case Framework
Our Safety Commitment to the Public, Partners, and Customers
Plus is committed to deliver a safe and reliable driverless solution. Safety is at the center of Plus’s work to deliver our SAE Level 4 (L4) driverless system, SuperDrive™, globally at scale and is the responsibility of every employee at Plus. Our safety approach is informed by rigorous testing and validation, academic research, government and regulatory guidance, and accepted industry standards. The result of this multi-layered approach to safety is the creation of a safety culture that permeates every level of our company.The Plus Safety Case Framework (SCF) is a vital component of our commitment to safety. The SCF is a working document that enables Plus to regularly confirm that our L4 system, which is built on end-to-end AI models, will operate safely on public roads. We will continue to evolve and adapt the SCF for new scenarios, environments, platforms and geographies as we expand our testing and commercial deployments.
How the Framework Is Structured and Supported Through Extensive Claims and Evidence
We are sharing the top three levels of our SCF for the public, regulators, customers and partners to understand how we ensure safety and track our progress towards launching SuperDrive in factory-built driverless trucks.Plus’s SCF presents a structured argument to support the following claim—Plus’s Level 4 self-driving system, SuperDrive, is engineered, tested, and validated to meet best practice standards for public road deployment. Represented as a tiered structure of claims and supporting claims, each level of the SCF supports our overall safety claim through the prism of Plus’s core safety pillars, key arguments, argument efficacy, and detailed claims. Finally, the foundation of the structure is evidence to support each detailed claim.
Built Upon Five Safety Pillars Covering the Plus Development Cycle
The Plus SCF structure is built upon five safety pillars that cover the development lifecycle of the Plus driverless system - Understand, Design, Develop, Prove and Deploy.- Understand: Plus’ use of structured process and analysis to ensure quality and completeness.
- Design: How safety and performance attributes are engineered into the design of the Plus ADS.
- Develop: The robust test and validation methodology. Testing is conducted at numerous levels from simulation to test bench to vehicle testing on closed course and public road environments.
- Prove: The processes around data driven continuous improvement. The stages of data collection, processing, curation and the derivation of training data and performance metrics are included.
- Deploy: Confirms the proficient management of Plus software releases, development and production programs.