Most of the tunnels have one tube with two lanes, but some tunnels have an extra lane when the gradient is more than 6 %.

大多数条海底公路隧道是单洞双线，但是当坡度大于6%时，有些隧道就增加一条线。

youdao

Randox's factory is tucked away at the end of a bumpy country lane near Crumlin, a test tube's throw from Craigavon.

BBC: Northern Ireland

Some boosters want a cross-river tram network, which would end by Rye Lane and make up for the Tube's almost-total bypassing of south-east London.

ECONOMIST: Why I love Peckham