Mmmm. Very true. But there is a sign on around this point, which is signed A30 (without brackets), but up ahead, it has brackets? It is similar to the B95 Antrim thingy where it had brackets but it was actually the route. On SABRE, ( https://www.sabre-roads.org.uk/wiki/A30_(Northern_Ireland) ), it says the A30 runs through here. No direction for southbound. It seems to make sense to cut it, but it also makes sense to follow the SABRE route.