Question: A666 road junctions which historic north-south road starting in Luton?

Context paragraphs:
York, Lancashire: York is a hamlet in the Ribble Valley district, in the county of Lancashire, England.  It is near the village of Langho.  For transport there is the A666 road and Langho railway station nearby.

Spaghetti Junction (disambiguation): Spaghetti Junction is a nickname applied to many road junctions (including a list of junctions).

Broxden Junction: Broxden Junction (or Broxden Roundabout) is one of the busier and more important road junctions in Scotland.  It is located on the outskirts of Perth.  The roundabout is an important hub of the Scottish road network, a major junction on the A9 north-south route, and the UK's northernmost motorway junction, being junction 12 of the M90 motorway.  All of the seven cities in Scotland are signposted from its exits.

A6 road (England): The A6 is one of the main historic north-south roads in England.  It currently runs from Luton in Bedfordshire to Carlisle in Cumbria, although it formerly started at a junction with the A1 at Barnet.  It is the fourth longest numbered road in Britain, behind only the A1, A38 and A30.

A666 road: The A666 is a major road in Greater Manchester and Lancashire, England.  Known as Manchester Road, Bolton Road, or Blackburn Road, depending on which area it is in, it runs from its junction with the A6 and A580 at the Irlams o' th' Height boundary with Pendlebury near Manchester, through Pendlebury, Clifton, Kearsley, Farnworth, Bolton, Darwen and Blackburn before meeting the A59 at Langho.  Along the route are the West Pennine Moors, the Turton and Entwistle reservoir and the Entwistle reservoir forest.

Old Church, New Jersey: Old Church is an unincorporated community located within Monroe Township in Middlesex County, New Jersey, United States.  The settlement is named for a Presbyterian community that settled on the site but relocated to Cranbury  1740 .  Originally, the area was farmland.  One of the farms in the area was the Dey Farm, in existence since the founding of Monroe Township in 1838 and the site of a command post used by George Washington during the Battle of Monmouth in 1778.  Starting in 2004, the area experienced a major change from its agricultural roots to single-family residences on the south side of the area and age-restricted communities to the north.  This redevelopment also caused the severing of the main north-south road, Old Church Road and the extension of Federal Road which formerly had its western end at Old Church Road to Applegarth Road.  The a farmhouse named England House was moved 4000 ft to the Dey Farm site to preserve the area's history prior to the construction of the new houses in 2004.

Beechboro Road: Beechboro Road is a north-south road located in the northeastern suburbs of Perth, Western Australia, connecting Morley and Bayswater with areas further north.  Until the construction of the nearby section of Tonkin Highway between 1984 and 1992, Beechboro Road was one of northeastern Perth's most important routes.  The road is discontinuous at Tonkin Highway, with the section from Gnangara Road to Walter Road officially known as "Beechboro Road North", and the section running through Bayswater as "Beechboro Road South".

Mirpur Road: Mirpur Road is a long north-south road connecting the northern part of Mirpur and Dhaka University campus.This is one of the major roads in Dhaka.  Mirpur road runs through Shyamoli, Mohammadpur, Dhanmondi.  the main intersections of Mirpur road include Asad Avenue-Mirpur road, Darus-salam road-Mirpur road, Elephant road-Mirpur road, Panthapath crossing, Ring road crossing etc.  The road is one of the busiest roads of Dhaka city.  Numerous Buildings and skyscrapers are situated on this road.

Langho: Langho is a small rural village 5 mi north of Blackburn in the Ribble Valley, Lancashire, England.  It is part of the parish of Billington and Langho.  The village is linked with Blackburn and Clitheroe by the A666 road and is served by Langho railway station on the Ribble Valley Line.

North Egremont Historic District: The North Egremont Historic District is a historic district in Egremont, Massachusetts.  It encompasses a crossroads village in the northern part of the town, where the north-south road, now Massachusetts Route 71, connects Kinderhook, New York to points further south, and the east-west road runs from Hillsdale, New York, toward Housatonic, Massachusetts.  The district encompasses some 336 acre along these and other roadways near their junction.  The oldest property in the area, a house, has elements dating to 1764, and the district includes three historic church buildings, the oldest being a significantly altered Baptist meetinghouse from 1816.  The later churches are an 1887 Baptist church, built as a replacement for the first one, and a Methodist church built in the Renaissance Revival style in 1861.  The only other notable institutional building is the wood frame clapboarded North Egremont School, built in 1880.  The district was listed on the National Register of Historic Places in 1989.

Supporting paragraphs: A666 road A6 road (England)
Answer: A6