Quote Originally Posted by sg7nil View Post
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Driving into work tonight at 18:30 and as I passed the Scottish Office building at Stenhouse (on way to Sighthill) I noticed that there were four number 22 buses nose to tail heading into town on the road! A glance to my right and I noticed that a bus had broken down on the bus route and three other buses had ran up behind it and were stuck.

Now I don't know how reliable the trams are supposed to be, but if one breaks down, there will be no option to simply re-route the ones behind it as there will only be one line in each direction.

Also, Princess Street is often closed for various functions throughout the year. Once again, buses can re-route but trams will be knacked.

When Romanes and Pattersons was on fire last year, they closed Princes St to all traffic, where would the trams have gone?

IMHO the best option (as suggested above) would be an underground system. A very limited amount of tunneling would be needed if it was done right, with radial overground lines feeding into it.

A former workmate was an ex-miner and he stated that the argument about Edinburghs bedrock being too hard to tunnel in is pure mince. In fact, hard rock is more self supporting and can therefore be done with a lot less tunnel lining and support than through softer materials.
Not sure about this bedrock issue, what I think is a major issue is the extent of basements and foundations of buildings, especially historic ones, around the city centre, and the effect of tunnelling and underground vibrations may have on them