We started off with a really bad model - build narrow and then widen, so that slip roads, bridges etc need to be re-built at any time we want to add a lane. A far better model would have been to build wide apart with the space between the carriageways separated with enough space to add a couple of lanes each way. In that way, the hard shoulder, on and off ramps/slipways, bridges etc would not have to be re-built. It is this precisely the cost of all these things that led to the promotion of "smart" motorways as a way of avoiding upgrade costs. Short term thinking = long term costs.

Entire Thread

Topic	Date Posted	Posted By
Smart Motorways	30/01/20 07:38:00	Nicholas Beard
Re:Smart Motorways	30/01/20 15:59:00	Philippa Bond
Re:Re:Smart Motorways	30/01/20 23:49:00	Christopher Gillie
Re:Re:Re:Smart Motorways	13/02/20 21:29:00	Philippa Bond
Reply	13/02/20 21:44:00	N V Brooks
Smart Motorways	14/02/20 12:33:00	Philip Coe
Re:Smart Motorways	15/02/20 08:49:00	Philippa Bond
Re:Re:Smart Motorways	15/02/20 09:03:00	Nicholas Beard
Reply	15/02/20 11:02:00	N V Brooks
Re:Reply	15/02/20 12:50:00	Jennifer Selig
Re:Re:Re:Smart Motorways	11/03/20 06:54:00	Nicholas Beard
Re:Re:Re:Re:Smart Motorways	11/03/20 18:37:00	Philippa Bond

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