ISO 20900:2023

Overview

ISO 20900:2023 - Intelligent transport systems - Partially-automated parking systems (PAPS) - Performance requirements and test procedures - defines minimum functionality, safety and test requirements for partially‑automated parking systems (PAPS) on light vehicles (passenger cars, pick‑ups, light vans, SUVs; motorcycles excluded). The standard covers both Type 1 systems (supervised by a conventional driver seated in the vehicle) and Type 2 systems (supervised by a remote driver, inside or outside the vehicle, with the vehicle remaining within line of sight). ISO 20900:2023 specifies required system behaviour, human‑machine interface (HMI) information content, operating states, and performance test procedures.

Key topics and technical requirements

• PAPS types and basic functionality: Distinguishes Type 1 (on‑board supervision) and Type 2 (remote supervision) and defines expected system roles during parking and leaving manoeuvres.
• Safety and supervision: Requires driver supervision throughout automated manoeuvres; the driver must be able to cancel or halt operation at any time.
• Supported parking scenarios: Defines requirements for parallel, perpendicular and garage parking spaces and slots, including detection and trajectory calculation.
• Operating states & HMI: Specifies minimum information to present in states such as Search, Found, Waiting for authorization, and Parking/Leaving manoeuvre to ensure clear communication with the supervising driver.
• Performance test requirements: Details test object definitions, environmental conditions, bordering vehicles, limiting objects, test criteria, and methods for evaluating PAPS performance across parking types.
• Monitoring & control: Covers automatic lateral and longitudinal control (steering, propulsion, braking, transmission, parking brake) and the use of non‑contact sensors for space measurement and hazard detection.

Practical applications

• Vehicle OEMs and Tier‑1 suppliers use ISO 20900:2023 to design and validate PAPS features, ensuring consistent functionality and safety expectations for drivers.
• Automotive software and sensor integrators apply the test procedures to verify trajectory planning, detection ranges and system responses.
• Test laboratories and certification bodies implement the specified performance tests and criteria to assess compliance.
• Fleet operators and mobility service providers rely on standardized requirements to compare PAPS offerings and ensure safe remote‑operation workflows.

Who should use this standard

• Automotive manufacturers, system integrators, HMI designers, validation/test engineers, regulatory agencies, and conformity assessment bodies working on intelligent transport systems and automated parking features.

Related standards

ISO 20900:2023 complements other ITS and automotive safety standards developed by ISO/TC 204 and relevant vehicle safety/HMI guidance. Implementers should align PAPS design and testing with applicable national regulations and broader automotive safety frameworks.