M4 motorway not signed, European route E30 includes most of the M4. The M4 has two sections of smart motorway. The one between junctions 19 (M32) and 20 (M5) north of Bristol has variable speed limits and a part-time hard-shoulder. Completion was in summer 2014. The section between junctions 24 and 29 in Newport has variable speed limits. In 2010 it was announced that a smart motorway would be constructed between junctions 3 and 12, with work starting in Autumn 2018. This will be the longest smart motorway scheme in the United Kingdom, with a length of 51km (32 miles). Work is
M32 Tank Recovery Vehicle Sherman such as the AVRE and the BARV; however, the Ordnance Department did not wish to use these variants and ordered several new ARV prototypes to be developed, also based on the M4 Sherman. The basic prototypes of the M32 were created by Lima Locomotive on January 11, 1943. The prototypes were labeled T5, T5E1, T5E2, T5E3, and T5E4. These designs competed against the T2 and T7 designs, which both had a turret mounted boom, at the Aberdeen Proving Grounds. The T5 was declared superior to the T2 and T7 designs after several weeks of testing. The four prototypes were