Strategies for Mitigating Software Defined Vehicle (SDV) Development Risks and Reducing Costly Recalls
Reduce the risks of product rework and recalls by using tools that enhance the efficiency and accuracy of requirements management and aid in compliance with UL 4600, the Standard for Safety for the Evaluation of Autonomous Products.
The shift to software defined vehicles (SDVs) marks a pivotal change in the automotive industry’s journey toward full autonomy. Initially, there was a rush toward developing fully autonomous vehicles, but the complexity of this task led the industry to adopt a more gradual, phased approach. This market transition has given rise to SDVs, but unlike traditional vehicles, which remained largely unchanged after purchase and are based on dated architecture topologies, vehicle OEM’s can now scale their software investments and simplify and optimize the vehicle architecture. This has benefits not only for the developer — resulting in a reduced total cost of ownership, potential acceleration of development, and improved safety and security — but also for the consumer in the form of increased choice, new business models, and post-sales updates and fixes.
Improving product and software development processes and the tools that support them can more effectively enhance safety and security standards while mitigating the risk of costly midcycle rework and after-sales recalls.
In 2023, there were over 300 recalls affecting more than 25 million vehicles, with costs potentially reaching millions of dollars per recall.
The automotive industry has advanced significantly from even a decade ago. Once-basic features, like touchscreen navigation, have evolved into sophisticated connectivity options, voice assistance, app ecosystems, and more. These changes bring several development challenges, including:
Managing increased software complexity
As vehicles become more software defined, managing multiple software components provided by many different vendors that perform entirely different functions increases complexity. For instance, an electronic control unit might operate the antilock braking system, while a cockpit domain controller is responsible for a very different task. In a software defined vehicle these distinct software systems must work seamlessly across the vehicle without issues, adding further complexity to an already challenging development cycle.
Ensuring functional safety and security compliance
With increased complexity, automotive companies face additional challenges in keeping up with safety and security standards and the associated regulatory compliance. The development community has relied on ISO 26262 for many years as the required functional safety standard. But, while it has historically served as an excellent baseline, the standard did not account for software defined vehicles, autonomous vehicles, or many of the new use cases.
Standards are evolving to keep up, and new ones, such as UL 4600, have been created that directly tie to autonomous vehicles. However, these standards continue to require companies to build requirements, test those requirements, and demonstrate that they have done everything possible to build a safe and secure product.
The process is complex with SDVs, especially when considering the hundreds of millions of lines of code involved. Companies must show that no faulty code exists and that they have not inadvertently introduced back doors that could create security issues or conditions that could violate a safety goal. As a result, there is a need to reconsider old processes and tools for requirements management to meet the current development environment and support mitigating potential risks.
Difficulty in meeting accelerated timelines
The pressure to deliver products and software faster is a significant challenge. Technology evolves rapidly, and no sooner have you developed a vehicle than consumer needs and opportunities emerge, leaving you to redesign to keep up with the market, differentiate, and stand out.
However, meeting accelerated timelines can conflict with maintaining quality and compliance, making it critical to strike the right balance. Adopting tools that allow for automation and faster processes can help keep up with these demands while aligning with safety requirements and standards. As more and more companies adopt an Agile development methodology, it’s increasingly important that the associated development tools do not stifle the benefits that Agile can offer. One great example is the concept of Traceable Agile™ that facilitates instantaneous, in-cycle insight into coverage for Agile
Managing the dramatic increase of third-party software
Advancements in automotive development have led original equipment manufacturers (OEMs) to source software from multiple vendors. Integrating this level of diverse software while avoiding safety and security issues can be challenging. Now, you not only have to integrate hardware from various suppliers but also manage a massive software bill of materials (BOM) from different vendors, ensuring that everything works seamlessly together.
You also need to ensure that you’re not introducing bugs due to incompatibilities between systems, which can cause unexpected glitches, security vulnerabilities and safety issues. These are very expensive, can potentially delay product launches, and create negative brand impact.
Often, hundreds or even thousands of software elements come together, with tens of millions of lines of code. Ensuring that all these elements work together while remaining safe and secure, and meeting consumer expectations for a modern vehicle, is critical.
Four Major Challenges with Software Defined Vehicles
1. Managing increased software complexity. The industry is shifting quickly due to the integration of software in vehicles, which presents challenges in effectively and efficiently developing and deploying SDV’s.
2. Ensuring functional safety and security compliance. Automotive companies face challenges meeting safety and security standards and regulatory compliance, particularly with complex software systems.
3. Difficulty meeting accelerated timelines. The pressure to deliver products faster in the SDV space is a key challenge.
4. Managing the dramatic increase of third-party software. OEMs are sourcing software from multiple vendors and integrating this level of diversity while avoiding safety and security issues is difficult.
Solid engineering practices involve deciding what to build, defining a set of requirements, building it, and then testing it. This development lifecycle process ensures that you’re solving for the correct problem and is centered around requirements management.
However, many organizations use Excel sheets or Word documents to house requirements. Initially, this approach might not seem problematic, but as products become more complex and requirements grow, the spreadsheet approach becomes unmanageable. Copying and pasting requirements across documents creates opportunities for errors, a lack of a single-source-of-truth and a lack of traceability introducing the risk of expensive product or software issues.
You can address this challenge by replacing legacy processes involving spreadsheets and other solutions with a more robust, automated tool specifically designed for requirements management. This change eliminates manual processes that open the door to errors, improves efficiency, and reduces the risk of missed requirements — resulting in potentially millions of dollars of savings.
