On 2011\12\20 10:50, D7666 wrote:
On Dec 20, 10:36 am, Graeme wrote:

I've never been convinced that premetro style tram tunnels are that good
an idea. Surely you want your high quality urban transport to be
prominently visible and easily accesible.

Ever used one.?

Since trams tend to have priority at traffic lights on surface routes
anyway, the tunnels exist for the benefit of road traffic rather than
for the benefit of trams, so the car passengers on the tunnel roof are
its real users.