NDLR meaning in General ?

The A361 is an A class road in England and at 195 miles (314 km) is the longest 3 digit A road in the UK. It runs south from Ilfracombe on the north Devon coast to Barnstaple, turning south-east to Tiverton then, after a break (the M5 connects the two sections), north east from Taunton in Somerset through Street and Glastonbury, along the bottom of the Mendip Hills through Shepton Mallet, past Frome and then into Wiltshire through Trowbridge, Devizes, Avebury and Swindon. It then runs through the eastern Cotswolds, via Lechlade, Burford and Chipping Norton and on through Banbury and Daventry before terminating at its junction with the A5 road at the village of Kilsby on the Northamptonshire-Warwickshire border near Rugby. Despite its length, most of the road is non-primary and relatively unimportant.