• Start of full-scale implementation of rapid information transmission system connecting the vehicle, fire department, and base hospital with aim of increasing the number of lives saved
  • Service being prepared for import vehicles with Bosch, Premier Aid, and Japan Mayday Service

Tokyo, Japan, June 15, 2018―Full-scale implementation of the advanced automatic collision notification system D-Call Net® is now underway at approximately 730 locations within Japan. A trial service has been ongoing since November 2015, whereby base hospitals and air ambulances have prepared systems to transmit fatal and serious injury probability data from vehicles to all fire departments within the trial area. The certified non-profit organization Emergency Medical Network of Helicopter and Hospital (HEM-Net), Toyota Motor Corporation (Toyota), Honda Motor Co., Ltd., (Honda), and Japan Mayday Service Co., Ltd. (HELPNET) have cooperated on this project.

At the start of the trial, there were 10 cooperating hospitals in 9 prefectures (with 9 air ambulances), and now, there are 42 hospitals in 31 prefectures (with 37 air ambulances). This is equivalent to approximately 70 percent of the total 61 base hospitals with air ambulances nationwide (including base/cooperating hospitals). In addition to planning further expansion of cooperating hospitals, the system will be made more effective by improving data transmission methods to hospitals.

As new service providers, Bosch Service Solutions (Bosch) and Premier Aid Inc. (Premier Aid) will participate in D-Call Net® to make preparations for the start of service. With vehicle connectivity rapidly progressing, the service will be expanded to more vehicles as a Japan-wide initiative, including customers with imported vehicles.

Message from HEM-Net Chairman of the Board Nobuo Shinoda, D-Call Net® representative organization
"The key to emergency medical treatment for people seriously injured in traffic accidents is provision of the necessary treatment as quickly as possible. For that reason, to accurately and promptly implement a 'traffic accident―transportation―start of medical treatment' cycle, HEM-Net, Toyota, Honda, and Japan Mayday Service conducted a trial operation of D-Call Net® for approximately two years starting in November 2015. With cooperation from the relevant agencies such as fire departments and hospitals, a system has now been put in place for the full-scale start of nationwide operation. Trial results show that D-Call Net® can reduce air ambulance dispatch time by 17 minutes. With planned participation from Bosch and Premier Aid, we want to contribute to an improvement in the number of lives saved throughout Japan by introducing D-Call Net® support into as many vehicles as possible."

The D-Call Net®operation system and other details are shown below.

About D-Call Net®

D-Call Net®, commonly referred to as an AACN (Advanced Automatic Collision Notification), is an advanced automatic collision notification system that uses vehicle connectivity technology. It estimates the probability of fatal and serious injuries by making an automatic analysis of data from both vehicles in an accident based on approximately 2.8 million accident data cases in Japan. The aim is to increase the number of lives saved after traffic accidents by making immediate dispatch decisions with air and ground ambulances through reporting to fire departments and cooperating hospitals.

D-Call Net® Summary

D-Call Net® Summary

Example of fatal and serious injury probability estimation data (training data)

Example of fatal and serious injury probability estimation data (training data)

Expected Effects from Introducing D-Call Net®

Expected Effects from Introducing D-Call Net®

Cooperating Hospitals

  1. Teine-Keijin-Kai Hospital (Hokkaido)
  2. Asahikawa Red Cross Hospital (Hokkaido)
  3. Kushiro City General Hospital (Hokkaido)
  4. Kushiro Kojinkai Memorial Hospital (Hokkaido)
  5. Hakodate Municipal Hospital (Hokkaido)
  6. Akita Red Cross Hospital (Akita)
  7. Yamagata Prefectural Central Hospital (Yamagata)
  8. Iwate Medical University Hospital (Iwate)
  9. Fukushima Medical University Hospital (Fukushima)
  10. Maebashi Red Cross Hospital (Gunma)
  11. Saitama Medical Center (Saitama)
  12. Nippon Medical School Chiba Hokusoh Hospital (Chiba)
  13. Kimitsu Chuo Hospital (Chiba)
  14. Shinshu University Hospital (Nagano)
  15. Saku Central Hospital (Nagano)
  16. Niigata University Medical & Dental Hospital (Niigata)
  17. Nagaoka Red Cross Hospital (Niigata)
  18. Toyama Prefectural Central Hospital (Toyama)
  19. Yamanashi Prefectural Central Hospital (Yamanashi)
  20. Gifu University Hospital (Gifu)
  21. Seirei Mikatahara Hospital (Shizuoka)
  22. Aichi Medical University Hospital (Aichi)
  23. Saiseikai ShigaHospital (Shiga)
  24. Mie University Hospital (Mie)
  25. Ise Red Cross Hospital (Mie)
  26. Wakayama Medical University Hospital (Wakayama)
  27. Toyooka Hospital (Hyogo)
  28. Kawasaki Medical School Hospital (Okayama)
  29. Yamaguchi University Hospital (Yamaguchi)
  30. Hiroshima University Hospital (Hiroshima)
  31. Hiroshima Prefectural Hospital (Hiroshima)
  32. Tokushima Prefectural Central Hospital (Tokushima)
  33. Ehime Prefectural Central Hospital (Ehime)
  34. Ehime University Hospital (Ehime)
  35. Kurume University Hospital (Fukuoka)
  36. Saga University Hospital (Saga)
  37. Saga-Ken Medical Centre Koseikan (Saga)
  38. National Hospital Nagasaki Medical Center (Nagasaki)
  39. Oita University Hospital (Oita)
  40. University of Miyazaki Hospital (Miyazaki)
  41. Kagoshima City Hospital (Kagoshima)
  42. Urazoe General Hospital (Okinawa)

D-Call Net® Applicable Car Models (as of June 15)

Brand Car Model (current models) Format Installation Results
Toyota Crown Royal, Crown Athlete, Crown Majesta, Land Cruiser, Land Cruiser Prado, Alphard, Vellfire On-board type 96,000 units
November 2015 to April 2018
Lexus LS, LX, RX, GS, GS-F, NX, IS, RC, RC-F, LC On-board type 77,000 units
November 2015 to April 2018
Honda Accord, Fit, Odyssey, Vezel, Grace, Legend, Step WGN, Shuttle, Clarity Fuel Cell, Freed, NSX Mobile telephone use type 278,000 units
June 2013 to April 2018


  • D-Call Net (Training Scenes)
    D-Call Net (Training Scenes)
  • D-Call Net (Training Scenes)
    D-Call Net (Training Scenes)
  • D-Call Net (Training Scenes)
    D-Call Net (Training Scenes)
  • D-Call Net (Training Scenes)
    D-Call Net (Training Scenes)
  • D-Call Net (Training Scenes)
    D-Call Net (Training Scenes)
  • D-Call Net (Training Scenes)
    D-Call Net (Training Scenes)