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New Japan-Oriented International Standards Issued for Pedestrian Detection and Collision Mitigation Braking Systems to improve Driving Safety of Vehicles To reduce both nighttime and daytime pedestrian-involved car accidents

New international standards for systems for daytime and nighttime pedestrian detection utilizing an automatic braking system to reduce the chance of collisions between vehicles and pedestrians have been issued based on the proposal filed by Japan to the International Organization for Standardization(ISO). These standards are expected to contribute to popularizing vehicles with built-in preventive safety functions that even work effectively in low-light or dark conditions, where the pedestrian casualty rate involving car accidents is particularly high, thereby decreasing the number of pedestrians involved in such accidents.

1. Background

Although the number of car accidents has been decreasing year after year, 34.4% of the total vehicle-related fatalities in the first half of 2017 were pedestrians who were vulnerable road users, and approximately 70% of those accidents occurred at night.

In light of this situation, in recent years, some automobile companies are introducing collision-prevention safety features into vehicles on the market in which built-in cameras and sensors detect pedestrians, and alarms or emergency braking systems alert the driver or stop the vehicle if collisions become likely, so as to decrease the occurrence of car accidents. Aiming to establish an environment in which customers are able to select safe vehicles and automobile companies are able to manufacture and market such vehicles, the National Agency for Automotive Safety & Victims' Aid(NASVA)has been conducting an effort titled "Type-based Test for Assessing Preventive Safety Functions of Vehicles," in which it conducts in-vehicle tests(which currently only target the daytime performance), and releases the resulting assessments to the public.


Figure 1:Pictures of a braking system for pedestrian detection and collision mitigation in operation

2. Outline of the international standards

Key points of the issuance of new standards(ISO 19237:Pedestrian detection and collision mitigation systems)are as follows.

  • The standards stipulate performance requirements of the systems and testing procedures(daytime and nighttime).
  • They also stipulate references to other international standards for specifications of mock pedestrian used for performance tests, an achievement developed in collaboration with another ISO working group.

In December 2013, the Society of Automotive Engineers of Japan, Inc.(JSAE)submitted a proposal of new standards to ISO / TC204(intelligent transport systems)/ WG14(vehicle/roadway warning and control systems), in which Japan serves as the secretariat. In response, WG14 developed new standards for ISO 19206-2 which specifies details of mock pedestrians to be used for vehicle performance tests in mutual collaboration with ISO / TC22(road vehicles)/ SC33(vehicle dynamics and chassis components)/ WG16(active safety test equipment), and on December 8, 2017, the ISO finally issued the new standards.


3. Expected effects

The new standards may cause entities worldwide to introduce both the daytime- and nighttime-performance requirements of vehicle braking systems and test procedures thereof into their vehicle assessments, considering the high death rate in car accidents involving pedestrians after dark. These efforts are expected to contribute to popularizing vehicles with more high-quality preventive safety features and decreasing the number of such accidents involving pedestrians. Through these efforts, the number of pedestrian deaths and injuries from car accidents may decrease globally and the goal set by the United States SDGs may be achieved:by 2020, member countries should halve the number of global deaths and injuries from road traffic accidents.

Note:This successful standardization effort is partly due to the use of 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. In addition to these new standards, Japan has been exercising leadership in other, related ISO activities, e.g., for partially automated lane-changing systems.


Release date

December 25, 2017

Division in Charge

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

Related website

Ministry of Economy, Trade and Industry1-3-1 Kasumigaseki, Chiyoda-ku, Tokyo 100-8901, Japan Tel: +81-(0)3-3501-1511
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