Yeah I know the 42A very well...... its the bus I used all my teenage years.... city centre to Artane............ I always sat on the upper deck and at the front.... luckily I got older, wiser and bought a moto. I now know why it was always late, but havent that tree been planted at the Five Lamps for a number of years now??
Years ago I drove double-deckers and was told by the boss "If you ever knock the roof off a bus, or jam it under a bridge, just leave it there, walk home, and don't come fkin back!"