The road which Tufnell Park Road links have been greatly alleviated from sole principal status by diverting in the 20th century the A1 through Edgware where the M1 also runs instead of its old route through High Barnet, converging the route with the straighter A41 road from Marylebone. The A1 road in the east of Tufnell Park is therefore less arterial which reinforces the loss of its old name "the Great North Road", a historical coaching road. It specifically serves vehicles driven between the A1 or M1 and the City of London.