 | ||||
|---|---|---|---|---|
 View of the A312 road ('The Parkway') in Hayes | ||||
| Route information | ||||
| Length | 13.5 mi (21.7 km) | |||
| Major junctions | ||||
| North end | Harrow | |||
 A404 A4005 A4090 A40 A4180 A4020 A437 M4 A4 A30 A315 A244 A314 A316 A305 A313 A311 | ||||
| South end | Hampton | |||
| Location | ||||
| Country | United Kingdom | |||
| Primary destinations | Heathrow Airport | |||
| Road network | ||||
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The A312 is an A road in England, running across west London from Hampton to Harrow. Its status varies from a local urban street to a major dual carriageway in Hayes. Part the road has been diverted to make way for Heathrow Airport, while another stretch was originally planned to be Ringway 3, one of four major ring motorways around London.