A42 may refer to :
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A42 road (England)
The A42 is a major trunk road in the East Midlands region of the United Kingdom. It links junction 23A of the M1 motorway to junction 11 of the M42 motorway. The A42 is in effect a continuation of the M42, and its junctions are numbered acc ...
, a road connecting Kegworth and Appleby Magna
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A42 road (Northern Ireland)
The A42 is an east–west route in Northern Ireland. It starts in Maghera in County Londonderry, from where it goes in the direction of Carnlough on the shores of the North Channel (Great Britain and Ireland), North Channel of the I ...
, a road connecting Maghera and Carnlough
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A42 motorway (France), a road connecting Lyon and Pont-d'Ain
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A 42 motorway (Germany), a road connecting Kamp-Lintfort and Castrop-Rauxel
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A-42 motorway (Spain)
A4 most often refers to:
*A4 paper, a paper size defined by the ISO 216 standard, measuring 210 × 297 mm
A4 and variants may also refer to:
Science and mathematics
* British NVC community A4 (''Hydrocharis morsus-ranae - Stratiotes aloide ...
, a road connecting Madrid and Toledo
A.42 may refer to :
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Aero A.42, a Czechoslovakian bomber aircraft of 1929 that was only ever produced in prototype form
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A42 tank, a British War Office designation for the "Heavy Churchill" (Mk.XIII) tank
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