The Garda Traffic Corps (in Irish Garda Cór Tráchta) was a specialised branch of An Garda Siochána, the Irish Police (see their vehicles at this link). As the name suggested, it was tasked with traffic duties – but could be used for other emergencies as well. As of 2017/18, the Traffic Corps has been amalgamated into the new Póilíneacht Bóithre (Garda National Roads Policing Bureau), vehicles branded for that can be found here.
These would be the most numerous vehicles of the Garda Traffic Corps you’d encounter on a day-to-day basis.
Car-Based Vehicles in Silver
Strange interval – for a while, the Garda Traffic Corps opted for a livery based on a silver paintjob, presumably to enhance the re-sale value of the cars (as is common in other countries, like Germany).
Not all traffic work takes place in good weather and on perfect roads, so the Garda Traffic Corps also used 4×4 vehicles:
Same vehicle as above, but used as a towing vehicle for the Garda Mounted Unit: