From March 31 this year new rules will require all insured drivers to provide their driver number before cover can be confirmed.

This data forms part of the Road Traffic Acts 2023 and will assist Gardaí at the roadside and ultimately reduce uninsured driving in the state.
Insurers and brokers will collect the data, which will be validated and verified before cover can be confirmed.
The data will be transferred to the Irish Motor Insurance Database (IMID)
This is an important development from a road safety perspective as the key aim of the IMID database is to remove uninsured drivers from Irish roads. An Garda Síochána have access to the Irish Motor Insurance Database through their Mobility Devices, and can currently detect drivers operating without insurance on Irish roads.
Speaking about this development, An Garda Síochána Assistant Commissioner - Roads Policing and Community Engagement Paula Hilman said:
“For Gardaí, having access to the Irish Motor Insurance Database on their Garda Mobility Devices puts them in a stronger position to detect those breaking the law by driving without insurance. The additional feature of having a person’s Driver Number data available to Gardaí through the Irish Motor Insurance database will further strengthen our ability to keep road users safe. This new development underscores the considerable progress achieved when we improve the technology available to members of An Garda Síochána when we partner with stakeholders and share data.”

Your driver number can be found under section 4D on the plastic driving licences and in field 5 of the older paper licences.