Design Complexity vs Vehicle Functionality
Consolidate functions onto shared software-defined hardware while maintaining EU AI Act transparency and NIS2 cybersecurity obligations for each logical function delivered.
CyberTRIZ analysis · Automotive contradiction VD035 · one of 8,235 worked contradictions published by CyberTRIZ.AI
Regulations
Business Context
Modern vehicles are expected to provide increasingly broad capabilities involving propulsion, safety, comfort, connectivity, driver assistance, energy management, personalization, diagnostics, and automated functions. Adding these capabilities through independent components and subsystems increases the number of interfaces, controllers, sensors, actuators, wiring connections, software dependencies, and validation requirements. Greater functionality can therefore make the vehicle progressively more difficult to engineer, manufacture, diagnose, update, and maintain. Reducing complexity by removing functions, however, can make the product less capable and less competitive.
Automotive TRIZ Resolution
Automotive TRIZ seeks to increase functional density rather than component count. Existing sensors, actuators, computing resources, structural elements, communication networks, and vehicle data should be examined for additional useful functions before dedicated resources are introduced. Common interfaces and modular architectures can isolate complexity while allowing functions to evolve independently. Software-defined behavior can enable one hardware configuration to provide different capabilities according to vehicle configuration or operating condition, while multifunctional physical components can combine structural, thermal, protective, or packaging roles. Complexity should therefore be removed from the architecture rather than transferred to the customer through reduced functionality.
Applicable TRIZ Principles
Principle 5 – Merging combines related systems, resources, or functions where integration eliminates unnecessary duplication.
Principle 6 – Universality enables individual components and system resources to perform multiple useful functions.
Principle 28 – Mechanics Substitution replaces selected dedicated physical mechanisms with configurable electronic or software-based functionality where this reduces overall system complexity.
Expected Outcome
Increased vehicle functionality
Reduced component and interface proliferation
Lower integration and validation burden
Improved architectural scalability
Decision Indicators
Early indicators that this contradiction is limiting vehicle development include:
Each new function requires additional dedicated hardware.
Component, controller, and interface counts increase faster than customer-visible functionality.
Engineering changes create unexpected effects across numerous interconnected systems.
Validation effort grows disproportionately with each vehicle generation.
Functions are removed primarily because the architecture cannot absorb additional complexity.
Monitoring these indicators helps engineering teams determine when functionality should be increased through better use of existing resources and architectural integration rather than continued component addition.