Dyfed-Powys Police’s Driver Training Unit will be running an exercise today and tomorrow (Tuesday, August 19 and Wednesday, August 20) on parts of the A40, A48 and M4 in Carmarthenshire and Pembrokeshire.

A police spokesperson said: “If you’re out and about, you might see marked police motorcycles and vehicles escorting an abnormal load on dual carriageways and parts of the motorway.

“While there may be some minor hold-ups, the team will do their best to keep any disruption to a minimum.”