1 
 Annex 
 
Partial amendments of Safety Regulations of Road Trucking Vehicles Act, equipment type 
approval regulations, and announcements that provide the details of the Safety Regulations 
of Road Trucking Vehicles Act 
１．Background 
In order to ensure the safety of automobiles by promoting international consistency of 
automobiles safety regulation, Japan contracted the United Nations "type approval 
mutual recognition agreement of the vehicle and etc.", hereinafter referred to as "1958 
Agreement" in 1998.  Since that year, in a phased manner, we have adopted the rules 
that are based on the mutual recognition agreement, hereinafter referred to as the "UNR". 
Now that out of UNR No.137, "Passenger cars in the event of a frontal collision with 
focus on the restraint system", UNR No.134, "Motor vehicles and their components with 
regard to the safety-related performance of hydrogen-fuelled vehicles (HFCV) " and UNR 
No.46, "devices for indirect vision and of motor vehicles with regard to the installation of 
these devices" were recently decided to be adopted. 
In addition to that, UNR No. 94, “the protection of the occupants in the event of a frontal 
collision” which Japan adopted before, has been reviewed and determined to be revised 
in the 167th meeting of the World Forum for the Harmonization of Vehicle Regulations 
(WP29) of the United Nations Economic Commission for Europe (UN/ECE). 
To the responses to the written above, the required amendments shall be made on 
Safety Regulations of Road Trucking Vehicles Act, Transport Ordinance No. 67 in 1951, 
hereinafter referred to as the "Safety Regulation", Device type specified regulations (No. 
66 of Transport Ordinance,1998), and the notice defining the details of the 2002 Ministry 
of Land, Infrastructure and Transport Notification No. 619., hereinafter referred to as " 
Announcement of Details". 
 
2. Outline of Amendment 
（１）Vehicle frame and body (Announcement of Details relating to Article 22, 100, and 
178) 
① Passenger cars in the event of a frontal collision with focus on the restraint system 
With the adaption of "Passenger cars in the event of a frontal collision with focus on 
the restraint system(UN-R137)", and then amendment as follows. 
  
【Scope】 
○ Vehicles of category M1※１ with a maximum permissible mass below 3.5 t ※２ 
○ Vehicles of category M1 with a maximum permissible mass more than 3.5t ※３ 
○ Vehicles of category M2※１ of Riding capacity 10 people ※３ 
○ Vehicles of category N1※１ with a maximum permissible mass below 2.8 t ※３ 
※1 As defined in the Consolidated Resolution on the Construction of Vehicles (R.E.3.), document ECE/TRANS/WP.29/78/Rev.3, 
para. 2 （www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html） 2 
 ※2 Same scope as UN-R137 
※3 Excluded scope of UN-R137 
 
【Summary】 
○ Female dummy install on the passenger seat. 
○ To add a new injury criteria for neck 
○ Injury criteria for thorax changes from acceleration [g] to The thorax compression 
criterion（ThCC） [mm].  
○ ThCC of male dummy to be installed the driver’s seat is injury criteria 
considering the elderly. 
 Current standard UN-R137 
Driver’s seat 
Dummy AM50 
（Hybrid III fiftieth percentile adult male） ← 
Head HIC 1000 ← 
Neck － Tensile neck force：3.3 [kN] 
The fore/aft shear forces：3.1 [kN] 
The neck bending moment： 57 [Nm] 
Thorax Acceleration：588 [m/s2] ThCC ：42 [mm] 
Femur The femur force criterion（FFC）10 [kN] FFC：9.07[kN] 
Passenger seat 
Dummy AM50 AF05 
（Hybrid III fifth percentile adult female） 
Head HIC 1000 ← 
Neck － Tensile neck force：3.3 [kN] 
The fore/aft shear forces：3.1 [kN] 
The neck bending moment： 57 [Nm] 
Thorax acceleration 588 [m/s2] ThCC 42  [mm] 
Femur FFC：10  [kN] FFC：7[kN] 
 
【Effective date】(※New model production only) 
 ・Vehicles of category M1 with a maximum permissible mass below 3.5 t 
  （Except imported car）：1 September 2018 
 ・Vehicles of category M1 with a maximum permissible mass below 3.5 t 
  （Imported car only）：1 September 2020 
 ・Other category：1 September 2023 
 
② The protection of the occupants in the event of a frontal collision 
With the amendment of "Passenger cars in the event of a frontal collision 
(UN-R94)", and then amendment as follows. 3 
   
【Scope】 
○ Vehicles of category M1 with a maximum permissible mass below 2.5 t 
○ Vehicles of category N1 with a maximum permissible mass below 2.5 t ※１  
※1 Excluded scope of UN-R94 
 
【Summary】 
○ The injury criteria for ThCC changes from 50mm to 42mm.  
 
【Effective date】(※New model production only) 
  ・Vehicles of category M1: 1 September 2018 
  ・Vehicles of category N1: 1 September 2023 
  
３．Schedule（to be changed occasionally） 
Announcement : 17 June 2016 
Application: 18 June 2016 
 
※Please refer to the web page for UN Regulation original 
http://www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29ap_nov15.html