The bypass itself has been partly superseded, initially by the M42 further to the east, and in more recent years by the M6 Toll, which intersects it at junction T3, runs directly alongside part of the former A446 section between Bassett's Pole and Weeford Island, where it veers off (and has a further junction, T4) to shadow the A5 instead, also crossing the A5127 (at the limited-access junction T5) a few miles later on. The bypass has been effectively slightly downgraded as a result, first with the at-grade, signalised roundabouts of junction T3 interrupting traffic flow, and soon after by the imposition of a 60 mph, SPECS-enforced average speed limit (ostensibly because of a substandard alignment - parts of the southbound carriageway were formed directly from the old A446 - and in order to discourage illegal car and motorcycle racing) on the A453-to-A5 section, making the toll road a slightly faster option even during off-peak hours.