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New International Standard for Partially-Automated Parking Systems proposed by Japan was issued.

Aiming to achieve a society with no traffic accidents

May 27, 2019

The International Organization for Standardization (ISO) issued a new international standard proposed by Japan regarding a system that automates the vehicle control required to park the vehicle by controlling the steering, acceleration, braking and transmission of the vehicle, under the supervision of a driver. This issuance is expected to contribute to a decrease in the number of traffic accidents in parking lots if vehicles with such vehicle control systems are disseminated.

1. Background

Parking lots are one of the sites where many contact accidents between vehicles and people occur (see Figure 1). In particular, very tragic accidents involving small children in parking lots are much too common due to the difficulty of seeing a child from the driver’s seat of a vehicle in a crowded parking lot. Approximately 300 victims are reported as casualties of traffic accidents in parking lots annually.*

In addition to this, a significant percentage of public drivers have expressed difficulty in parking even their own vehicles (see Figure 2). In particular, parking a vehicle into a narrow space that requires multiple actions, i.e., reversing and advancing a vehicle multiple times while avoiding contact with surrounding objects, is particularly stressful. Furthermore, such parking maneuvers are often slow and this may hinder smooth traffic flows and cause traffic jams.

Currently, some vehicles with built-in, partially-automated parking systems are already on the market. In response to this trend, Japan filed a proposal with the ISO for international standardization of such systems to clarify necessary performance requirements to allow for the future, broad dissemination of automated vehicle parking systems that meet specific performance criteria.

Figure 1: Sites where vehicle accidents occurred

Figure 2: Types of driving operations that drivers feel that they are not good at.

2. Outline of the new international standard

The newly issued international standard ISO 20900** for partially automated parking systems stipulates standards for functionality requirements and for performance-testing procedures concerning two types of systems. One system is operated under the condition that a driver is seated in the driver’s seat, and the other is operated by a remote-control terminal.

In July 2016, Japan submitted a proposal for a new international standard within ISO / TC204 (intelligent transport systems) / WG14 (vehicle/roadway warning and control systems), in which Japan serves as the convenor, and the ISO issued the new standard on May 13, 2019.***

Figure 3: Image of a vehicle operating with a partially-automated parking system

3. Expected effects

These systems that take control of the most difficult parking maneuvers will help drivers concentrate on verifying the safety of the areas surrounding their vehicle. This issuance of new international standards is expected to contribute to the worldwide dissemination of vehicles with such built-in systems that meet a certain level of performance, and a decrease in the number of traffic accidents in parking lots is expected as a result. Moreover, this new international standard is also expected to contribute to successfully decreasing the number of global fatal traffic accidents by half by 2020, a target year set in the Sustainable Development Goals policy of the United Nations.

*1. Accidents between Pedestrians and Vehicles in Parking Lots and Other Sites, ITARDA Information, No. 115, the Traffic Accident Research and Data Analysis

**2. ISO 20900: 2019
Intelligent transport systems - Partially automated parking systems (PAPS) - Performance requirements and test procedures

***3. This successful international standardization is partly due to the achievements using the Expenditures for the Strategic Development of International Standards Project for Rational Energy Use (international standardization for fundamental technologies for autonomous driving systems and establishment of bases for popularization of these standards), which METI has commissioned to a private entity.


Division in Charge

International Standardization Division, Industrial Science and Technology Policy and Environment Bureau