Councillor Happy with M90 Answers
Dave Dempsey, Conservative Councillor for the Inverkeithing & Dalgety Ward, is happy with the answers he’s received to questions put to the Forth Replacement Crossing Team regarding the recent works on the M90.
 
Cllr Dempsey said “I posed three questions. The first was about the narrowing of the slip road at Junction 1. I’m told this is to provide safe access for maintenance.
 
My second question concerned the volume of work done and disruption caused and whether this was necessary to install a few gantries. I’m advised that the work included
• Re-surfacing of the South-bound carriageway and some North-bound resurfacing,
• Improved drainage along this stretch of the M90,
• Provision of hard-standings for any required maintenance of the gantries,
• Cabling and carriageway traffic detectors,
• Improved communication opportunities through the installation of electrical infrastructure along this part of the M90 corridor.
I’m happy with that.
 
My third question concerned the future use of the variable limits in view of the way the existing advisory speed signs are employed. I’m told that the new limits will be progressive and, combined with the increased number of signs, should eliminate the problems I’d described.
 
Perhaps most important of all, the reply I received stressed that the changes will be monitored and revised if need be. With that assurance, I reckon that we should wait and see how it all works out.
 
ENDS
 
Contact Cllr Dempsey by email or on 01383 415022 or 07983 427970
 
For editors – the main text of Transport Scotland’s reply read as follows
 
“1. Slip Road at Admiralty
 
The reduction of the south-bound slip lane at M90 Junction 1 (Admiralty) to a single lane is a
safety measure; it is required to ensure safe access to the maintenance area for the gantry
located there. Our traffic modelling indicates that this will not be a significant problem but the
area will be monitored.
 
2. M90 – Admiralty to Halbeath
 
The contract awarded to GRAHAM Construction included the installation of Intelligent Transport
System Infrastructure on the M90 between the Admiralty and Halbeath junctions in Fife and
provision for south-bound bus hard-shoulder running.
 
The end product will be 18 overhead gantries forming the northern section of a 22km managed
motorway corridor from the M90 Halbeath Junction over the new Main Crossing to the M9 north
of Newbridge Roundabout (M9 Junction 1), which will regulate traffic flow and provide motorists
with up-to-the-minute information regarding speeds and incidents on variable message signs
(VMS).
 
The completion of this contract will allow the system to be used in advance of future roadworks
in the Ferrytoll area as part of the Principal Contract for the Main Crossing. It also allows the
early introduction of a temporary South-bound bus hard shoulder facility running on the M90
from just south of Halbeath junction to the M90 Junction 1 (Admiralty). This will connect to the
existing facilities leading to the Forth Road Bridge in advance of the opening of the Halbeath
Park and Choose facility in 2013. The use of the bus lane will be monitored for compliance
following its opening.
 
Other works carried out by GRAHAM Construction also provided;
 
• Re-surfacing of the South-bound carriageway and some North-bound resurfacing,
• Improved drainage along this stretch of the M90,
• Provision of hard-standings for any required maintenance of the gantries,
• Cabling and carriageway traffic detectors,
• Improved communication opportunities through the installation of electrical infrastructure
along this part of the M90 corridor.
 
The contract cost for the Fife ITS project is £12.9m – more than £2m below the original
estimated cost range.
 
3. Intelligent Transport System – (ITS)
 
ITS allows variable mandatory speed limits to be applied so that vehicle speeds can be
managed during congested periods and in response to incidents. The system can automatically
detect incidents and the frequency of the gantries means the speed control will be more
reactive. The reductions in the mandatory speed limit will be of a progressive nature through a
series of gantries. The gantry mounted equipment is connected to other roadside equipment
within the project which is monitored and controlled through the Traffic Scotland Control Centre.
 
The ITS will also support the operational management of the traffic within the FRC corridor to
deliver optimum capacity within a safe, efficient and reliable environment and provide local
information to road and public transport users .
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