1. Proposal for the scope of RWS
JASIC Noise subcommittee
Koichi Hirata

2. The vehicle type situation of M2 category in the Japan market
As for reversing alarm fitting categories, M2 category should be considered this situation that is difference between below 3.5t and above 3.5t.
The vehicle type situation of M2 category in the Japan market
More than 9 seats
M≦ 5t
Category
Description
Example in Japan M2
M≦ 3.5t
3.5t＜M≦ 5t
About　7m
About　5m
・N1　category derivation
　( Body size is normally
same as N1 category )
・M3　category derivation
same as M3 category )
Reversing alarm is NOT popular
Reversing alarm is popular
・Sales volume is high
・Sales volume is very low
(Currently, it is’t sold )
technically permissible maximum
laden mass (M) in 51-03
(For your reference,R51-03 testing method is also divided into below and above 3.5t due to different type of vehicle)

3. Proposal for the scope of RWS
Scope : N3+M3 +N2+M2 (3.5t ＜GVWR) (big & medium)
small
big
medium
Categories
Description
Example in Japan
Passenger car
Truck
Less than 9 seats
More than 10 seats
GVW※ ≦ 5t
5t　＜GVWR
GVWR ≦ 3.5t
3.5t＜GVWR ≦ 12t
3.5t＜GVWR
GVWR ≦3.5t
12t　＜GVWR
※GVWR　＝　Gross Vehicle Weight Rating