Motorcycle Adaptations
ISO 26262-12: Functional safety for single-track vehicles with unique dynamics and rider exposure
What You'll Learn
Build complete competency in motorcycle adaptations through structured, progressive learning.
Apply Part 12 adaptations
Correctly apply ISO 26262-12 modifications to HARA, ASIL determination, and safety mechanism selection for motorcycles
Assess rider vulnerability
Quantify the elevated risk exposure of motorcyclists and translate it into appropriate severity and controllability ratings
Design lean-aware systems
Develop electronic safety systems that account for motorcycle lean angles, weight distribution, and single-track instability
Classify motorcycle hazards
Identify and classify hazardous events specific to two-wheeled vehicles not present in passenger car analysis
Plan validation campaigns
Design comprehensive test and validation plans for motorcycle safety systems including simulation and track testing
Comply with Part 12
Build a compliant safety case for motorcycle electronic systems referencing all relevant Part 12 requirements
13 Comprehensive Chapters
Each chapter builds your motorcycle adaptations expertise systematically from foundations to advanced application.
ISO 26262-12 Overview
Introduce Part 12 of ISO 26262, its scope, normative references, and the rationale for motorcycle-specific adaptations.
Key Differences from Passenger Vehicles
Systematically identify where Part 12 deviates from the main standard and why these deviations are justified by vehicle physics and rider exposure.
Single-Track Dynamics
Understand the physics of two-wheeled vehicle dynamics including roll balance, steering geometry, and gyroscopic effects that drive unique safety challenges.
Rider Exposure & Vulnerability
Analyze the significantly higher vulnerability of motorcycle riders compared to passenger car occupants and how this affects safety goal severity ratings.
Motorcycle-Specific Hazards
Catalog hazardous events unique to or amplified in motorcycle operation, including low-speed tip-over, tank-slapper, and electronic throttle failure modes.
Controllability Classification
Apply the adapted controllability classification for motorcycles, recognizing that rider skill variance is wider and average controllability is lower.
ASIL Determination Adaptations
Work through the modified ASIL determination table from Part 12 and understand how severity, exposure, and controllability parameter values differ for motorcycles.
Safety Mechanisms for Motorcycles
Review safety mechanisms specifically applicable to motorcycles, including lean-angle-aware intervention strategies and rider-centric warning systems.
ABS & Traction Control
Deep-dive into motorcycle ABS and traction control systems, their ISO 26262-12 requirements, and unique calibration challenges for two-wheelers.
Electronic Suspension
Examine electronically controlled suspension systems for motorcycles and the safety requirements arising from real-time damping adjustments.
System Architecture
Design safety-compliant system architectures for motorcycle electronic systems including CAN/LIN topology, power domains, and sensor redundancy.
Validation & Testing
Plan and execute validation activities for motorcycle safety systems including test track scenarios, simulation, and rider acceptance testing.
Best Practices
Synthesize industry best practices for motorcycle functional safety development, including collaboration with motorcycle OEM safety teams.
6 Motorcycle Safety Diagrams
Experiment with visual tools that bring motorcycle adaptations concepts to life.
Single-Track Stability Envelope
Diagram showing the stability operating envelope of a motorcycle as a function of speed, lean angle, and electronic system intervention boundaries
ASIL Determination Table (Part 12)
Modified ASIL lookup table from ISO 26262-12 with annotations showing differences from the passenger vehicle table in Part 3
Cornering ABS State Machine
State machine diagram for a lean-angle-aware ABS controller showing transitions between normal, intervention, and fade-out states
Hazard Scenario Mapping
Matrix mapping motorcycle-specific hazards to severity, exposure, and controllability ratings with ASIL outcome
Electronic Safety Architecture
Motorcycle system architecture diagram showing ECU topology, sensor inputs, actuator outputs, and safety partitioning boundaries
Validation Test Coverage
V-model diagram showing how simulation, HIL, and track test activities cover the safety requirements for motorcycle safety systems
Cornering ABS System for Sport Motorcycle
A motorcycle OEM applied ISO 26262-12 to develop a cornering-capable ABS system for a 1000cc sport motorcycle. The ASIL determination using Part 12 tables revealed one additional ASIL B requirement not visible using the standard Part 3 table.
- Identified 8 motorcycle-specific hazards absent from the passenger car HARA
- Lean angle sensor qualified as ASIL C SEooC with dedicated Safety Manual
- Cornering ABS intervention logic verified with 1,400 test runs on proving ground
- System achieved ISO 26262-12 compliance confirmed by third-party assessor
Motorcycle HARA Template
Master Motorcycle Functional Safety
Learn how ISO 26262-12 adapts automotive functional safety requirements for the unique challenges of two-wheeled vehicles
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