A coarse-granularity color coding scheme is used with TRL and MRL labels within the iNEMI Roadmap:

In-table color key

Range of readiness levels



TRL: 1 to 4
MRL: 1 to 4

Levels involving research


TRL: 5 to 7
MRL: 5 to 8

Levels involving development


TRL: 8 to 9
MRL: 9 to 10

Levels involving deployment

As well as providing a quick visual means of inspecting the solution tables, this color coding sidesteps the low level of certainty with with the selection of any given TRL or MRL level and should be relatively accurate.