That is the Soccer Bus to lime street and a Mersey Rail station nearby also (Ormskirk line). They stopped doing them before the game in the 1990s, and haven't run every game or season, so you can't be certain it will run as the "save the fuss, get the soccer bus" adverts stopped 20 years ago . They are in the same location for either side having a home game, I upset a couple of drivers by insisting on the adult ticket I paid for and not wanting to be part of a scam.If they really do succeed in stopping the vast majority of people trying to find parking near the ground, a knock on advantage to that would be it should open up the roads for buses and taxis, to be able to whizz back and forth to town in next to no time.
Even though I didn’t use them, I noticed at Everton the other night, a huge fleet of buses parked up on the main road just round the corner from the away end. Presumably all heading back to the city centre after the game.
At other grounds where parking seems to be very restricted, it makes jumping in a taxi much more appealing. Southampton is one that springs to mind. You get a cab in the city centre and virtually the only traffic you encounter is other taxis. At the ground in five minutes.
Hopefully City will be working with bus and taxi firms to get something organised getting people away from the ground a bit more efficiently. Which would in turn take the strain off the tram system a little.
The big plus is it is a dual carriage way into the City Centre and no one is walking on it. City would need to steward the roads to current buses more attractive, however being further from the City centre drastically cuts down walkers in Liverpool. You can get a bus from County Road easily too there, all traffic is going to the motorway and not a coastal city centre.