Upgrade the Keir
Upgrade the Keir
We request that Transport Scotland and the Cabinet Secretary for Transport, Infrastructure and Connectivity with support from Stirling Council and the local MP Stephen Kerr commit to implementing grade separation of the Keir Roundabout as soon as possible, for reasons of road safety.
As queuing at Keir Roundabout is also a significant factor in collisions at the junction, with 70% of collisions involving queuing vehicles. Collisions at Keir Roundabout accounted for 31% of accidents at all junctions on this section of the A9.
"The DMRB Stage 1 Assessment report concludes that the grade separation of Keir Roundabout should remain part of any strategy going forward."
"Section 1 – Keir Roundabout
Keir Roundabout is a large at-grade 5 arm roundabout joining the A9 (Bridge of Allan), M9 (Central Belt), B824 (Doune) and B8033 (Dunblane) and as such suffers from congestion at peak periods. The roundabout has 2 circulatory lanes and is fully lit.
Problems and Opportunities
Initial analysis of the most recent studies on the route; including the DMRB Stage 1 report (AECOM, 2013), indicate that improvements to Keir Roundabout in the form of an upgrade to a grade separated layout should be included within the overall development of improvements within this section of the A9. Delays are known to occur at this junction, which provides a connection between the A9 and M9 and also traffic feeding into the north of Bridge of Allan and Stirling. The DMRB Stage 1 report makes reference to a recent BEAR Scotland report which investigated queuing on the A9 approach to the roundabout and indicated that when flows exceed 1,500 vehicles per hour, queues can extend up to 2.5km from the junction. Significant queuing occurs on Sunday, Monday and Friday evenings and continues over a three hour period from 3pm onwards."
"Queuing at Keir Roundabout is also a significant factor in collisions at the junction, with 70% of collisions involving queuing vehicles. Collisions at Keir Roundabout accounted for 31% of accidents at all junctions on this section of the A9, although it is noted that the majority of these were categorised as ‘slight’."
"In line with the DMRB Stage 1 Assessment report, it is therefore recommended that grade separation of Keir Roundabout be taken forward for further consideration at subsequent stages of assessment. Due to the strategic importance of the Keir Roundabout and relatively high traffic movements through it, potential options are likely to be on a larger scale to the remaining junction improvements along the route, therefore this could effectively form a stand-alone package within the corridor improvements."