1. Ideas for scope of „UNR-WLTP“ (and maybe UNR-83.08
From Bill Coleman –

2. Category
GVM (kg)
Reference
mass (kg)
Proposal, effects & justification
M1 & N1
Include in “R-WLTP”
R-49 approval acceptable in EU & 58A CPs
No effect on IWVTA as R-49 is not yet included
> 2840
Exclude from “R-WLTP”
These vehicles would have to take local approvals for Japan
Otherwise EU would be forced to accept out of scope vehicles M2
≤ 3500
M2 & N2
> 3500
≤ 2380
These vehicles would have to take local approvals for EU
Otherwise Japan would be forced to accept out of scope vehicles
JP LD - EU HD
JP HD - EU LD
JP LD - EU HD Opt
JP HD - EU LD Opt

3. Fact: IWVTA is restricted to M1 vehicles for the foreseeable future
The main driver for the harmonization of WLTP is to deliver a Regulation suitable for IWVTA
The basic idea is that we restrict the scope of “R-WLTP” to M1 vehicles up to RW 2610 kg (and 2840 kg by extension).
This would mean that some M1 vehicles which are currently light duty in Japan would be excluded but would avoid forcing the EU to accept vehicles which are out of their scope (a scope change needs approval of EU Parliament).
It however removes the concerns for categories M2, N1 and N2
R scope could then be a copy of the scope of EU-WLTP – i.e. the same scope as UNR83 07 series
Update from Task Force Meeting 7th –Aug-2019
L1a – same scope as EU-WLTP
L1b – same scope as GTR15
Level 2. M1 vehicles only – up to a maximum ref mass of 2,840kg