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Legislative Assembly for the ACT: 2018 Week 01 Hansard (Thursday, 15 February 2018) . . Page.. 326 ..


(2) Has any analysis been conducted of the traffic incidents which have been recorded at the Barton Highway/ Gundaroo Drive/ William Slim Drive roundabout since the intersection was signalised to assess if further upgrades to the intersection are required; if so, what were the findings of that analysis.

(3) Has any analysis been conducted of the traffic flows on surrounding roads since the Barton Highway roundabout was signalised; if so, what were the findings of that analysis.

(4) What conclusions have been reached regarding the effectiveness of the project to signalise the Barton Highway/ Gundaroo Drive/ William Slim Drive roundabout.

Ms Fitzharris: The answer to the member’s question is as follows:

(1)

Time frame

Injury

crashes

Property Damage Only crashes

Total number of crashes

Comments

01/01/2016 - 31/12/2016

2

62

64

Barton Highway Intersection Signalisation construction continues disrupting flows.

Intersection signalisation in operation December 2016

01/01/2017 – to date(12/17)

(Preliminary)

4

43

47

Barton Highway Intersection Signalisation construction completed (William Slim Drive approach) February 2017

Please note 2017 data is only preliminary.

(2) The available reported crash data set is currently not sufficient to carry out an appropriate analysis to see if further upgrades to this intersection are required.

(3) No, for evaluation purposes, travel data is collected over a year to compare to prior travel patterns to measure the success and impacts of the intersection improvements. The range of roadworks across the Gungahlin district impact the travel patterns of drivers through the network, full appreciation of the impact and effectiveness of the intersection improvements will not be clear until these works are completed.

(4) Taking an average traffic volume of 43,705 vehicles per day (max 46,806 vehicles per day) as assessed November 2017, there have been no complaints regarding delays or queueing at the intersection since the intersection signalisation has been in operation and the initial acceptance period elapsed.

Signalisation of the intersection has resulted in reduced delays in the morning peak, and in the evening peak; with significantly less queuing during these periods. The signals operate to balance the green time for each phase and the volume of traffic on each leg of the intersection.

Similar reductions are evident in the reverse evenings flows out of the city along the Barton Highway and William Slim Drive.


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