Canberra's second point-to-point speed camera system planned for the city's south will be delayed by at least eight months, the ACT Government has conceded.

The cameras planned for Athllon Drive between Tuggeranong and south Woden will not be operational until August at the earliest, Attorney-General Simon Corbell has told an Assembly Committee.

He said on Wednesday the capital's first point-to-point set-up, on Hindmarsh Drive, had achieved an 80-fold reduction in speeding in its first year in operation.

But Mr Corbell was unable to provide crash statistics requested by Canberra Liberals members on Wednesday morning.

The new camera-monitored stretch, on Athllon Drive between Drakeford Drive in Kambah and Beasley Street in Torrens, will be delayed until August.

The minister said this was because of the disruption to the procurement process caused by the 2012 Territory election.

''TAMS have advised that, factoring in procurement timelines and some delays associated with holiday periods, the cameras are due to be installed and operational by August this year,'' Mr Corbell said.

''During the caretaker period, Territory and Municipal Services sought advice as to whether or not they could proceed with procurement for the point-to-point cameras themselves, the actual camera technology, during the caretaker period.

''They were subsequently advised toward the end of the caretaker period that they could proceed to procurement. They then concluded their necessary procurement arrangements and by the time that occurred the Christmas/New Year period had occurred.''

Mr Corbell went on to tell the committee that fewer than 10 motorists per day were speeding on Hindmarsh Drive, compared to a daily total of 800 during the testing period for the cameras.

''During the period 27 February 2012, to 30 January 2013, 3424 point-to point road safety camera infringement notices were issued to motorists speeding through the Hindmarsh Drive site,'' the minister said.

''Prior to this site commencing operations the traffic camera office identified approximately 800 motorists a day who maintained an average speed above the posted limits.

''Average speeds were detected in excess of 140km/h during testing along that stretch of road.''

''The highest speed recorded since the cameras became operational was 126km/h, in September 2012.''

Justice and Community Safety deputy executive director Karen Greenland told Liberal MLAs Zed Seselja and Giulia Jones that crash statistics were compiled by ACT Policing and processed by Territory and Municipal Services, and that JACS could not produce them.

''The intention is to review the rates of crashes on that stretch of road,'' Ms Greenland said.

Liberals' transport spokesman Alistair Coe, speaking after the committee, said the government must produce the crash statistics to support its use of point-to point technology.

''The fact that the government is unable or unwilling to present this data, I think is cause for suspicion,'' Mr Coe said.

''It's not just restricted to point-to-point cameras, [the] fact that the government is unwilling to produce data, I think is pretty worrying.''