Meanwhile new footage has emerged of a Canberra driver illegally parked on the light rail tracks during a red light.

Both the light rail consortium and Transport Minister Meegan Fitzharris are urging people to be careful around the tracks, ahead of the start of services on April 20.

Ms Fitzharris said "people are really taking notice of light rail now" with testing occurring along the entire Civic to Gungahlin route and a major community awareness program going on.

However The Canberra Times has been supplied with video of a driver sitting on the light rail tracks at Mitchell on Thursday afternoon waiting to turn right.

Witness Dion Kirkland said the driver sat there for the entire light cycle. Stopping on the light rail tracks can result in a fine of up to $3000.

Ms Fitzharris said it was a "big change" and would take some time for motorists to become familiar with light rail.

"Please be alert as you’re travelling on near or across the light rail route, particularly for pedestrians and cyclists but also for motorists as well," Ms Fitzharris said.

But it's not just car drivers behaving badly around light rail. Canberra Metro chief executive Glenn Stockton said the driver who was under investigation for running a red light and almost taking out an Uber driver was back at work.

“That driver went through some retesting, some recertification and that driver is now back in service. I’m confident in the driver’s ability," Mr Stockton said.

Canberra Metro is also looking for more drivers ahead of the light rail launch.

A Transport Canberra spokesman said Canberra Metro Operations was seeking to "complement its existing team of trained drivers who have achieved their driving competency certificates with a small number of new trainee drivers".

"This is a regular part of managing our human resources as we approach the commencement of light rail services," he said.

Meanwhile, the light rail project is likely to gain accreditation just before its public launch next month.

Asked whether it was a good idea to announce the start date before project accreditation was finalised, Mr Stockton said that was "a question for government" but it was always expected accreditation would be granted "just prior to going to service".

"As I said we need to ensure that we've gone through the testing and commissioning process because that allows the accreditation authorities to have confidence that the process has been completed," Mr Stockton said.

Mr Stockton also said there were no impediments to achieving accreditation although there was "there’s a tremendous amount of work still occurring along the project".

"A lot of it is finalisation of elements along the alignment so they’ll be works to complete the landscaping, finalise curb and gutter intersection alignments as well but we’re also continuing our testing and commissioning," he said.

Ms Fitzharris said a "responsible government always has contingency plans" and the public would be advised if the date ha to be pushed back.

"What the certification process will provide to the government and the Canberra community assurance that this is a safe light rail project and one that will provide enormous benefits for years to come," she said.

Ms Fitzharris will also meet with the federal minister for the national capital and external territories about light rail to Woden in the coming weeks.

Asked whether Canberra Metro was in talks with the government about also building the second stage of light rail, Mr Stockton said their focus was delivering stage one.

"At the appropriate time the government will take their own decisions around stage two," Mr Stockton said.