Traffic Analysis / Transport Impact Assessment


For an in-depth review of Traffic Management Plans to benefit both the road user and the contractor.

Transport Impact Assessment (TIA)

A Transport Impact Assessment (TIA) is a process that reviews traffic management plans that may cause significant disruption to road users, as well as public transport users, cyclists, pedestrians, etc. A TIA also estimates traffic waiting times and length of queuing faced by road users. TIA’s generally cover:

  • An in-depth review of traffic flow through the site using traffic modelling software
  • An in-depth review of conflicting traffic movements (this includes pedestrian, PT, and other movements as well)
  • The surrounding areas that can generate traffic, which may then cause different issues during different periods of the day or week.
  • Suggest alternative measures to reduce traffic impacts that may be caused by Road works.
  • Any potential safety issues that may arise during road works.

Commonly required for:

    • Larger sites that affect the surrounding areas and any other TTM site nearby. 
    • When traffic waiting times and length of queuing need to be determined to a high level of probability 
    • Determining the hours of works for closures. 
    • Checking viability of installing a closure 24hrs per day. 
    • Analysing the difference of impacts between different work periods through the year – for example, working between school holiday periods vs working within school holidays.

Average Cost Range $4000.00 to $ 10 000.00 +

–  Does not include obtaining traffic counts, however we can provide an estimate.
–  Every TIA will have a unique estimate.

Traffic Analysis (TA)

A Traffic Analysis (TA) is a process that reviews traffic management plans that may cause significant disruption to road users. The TA looks at transport impacts generated by road works, and is based around:

  • A basic review of traffic flow through the site, and any potential for impacts to the road user.  
  • The assumption that the area is mostly used by motor vehicles and pedestrians, cyclists and Public transport users are low priority. 
  • Providing evidence to see if works on the roading corridor can be done without causing major disruptions.

Commonly required for:

    • Smaller sites with very little interaction with the surrounding areas.
    • Traffic closures that are installed for short periods of time.
    • Checking viability of installing a closure during the day on a level 2 road 
    • Determining the hours of works for closures. 

Average Cost Range $1500.00 to $ 2500.00

– Does not include obtaining traffic counts, however we can provide an estimate.
– Every TA will have a unique estimate.


Transport Impact Assessment (TIA) Explainer Video

What our clients say

Parallaxx offer fast and quick efficient service. They often know know alternative solutions and are very innovative. With the consultancy side they can offer advice with the best possible way to keep the traffic moving, causing minimum delay and keeping things on time. They are a pleasure to deal with. They are very competitive in the traffic project management industry. If I request a TMP they will go above and beyond.


Keith Smith

They provide a quality TMPs, give a good timeline, and are flexible for changes. Parallaxx oversee everything, communicate, and let us know what to expect. Their services are great.


Kim Burgess

In the general industry, ‘great’ - is Parallaxx. the way that they produce, their style of how they look has become almost “THE TMP”. If I pick up a TMP and not in Parallaxx style? it is kind of a struggle to read it. The information design makes it easy on the eyes and the brain.


Construction Client

On a project it’s the accuracy in CAD that’s needed. If you don’t get it right you get into problems on the next stages. There are hundreds of constraints that we need to accommodate, and I find when I describe things, they’ve got the CAD skills that can make it happen and look nice. They understand my jargon - they come back to me with the same language. They are experts in dealing with submitting and following up to get the TMPs approved to the council. They have the administrative responsibility.


Construction Client

They have control of all aspects of what they’re doing. I push them hard and they just handle it. I just want to be able to call someone and they handle it - These guys are good guys (Parallaxx).


Jim Scharfe

The relationship is the most important thing, they’ve got to have a good relationship with the construction team, also with the network that could be ATOC or AT, and then they’ve got to be able to work with everyone and Yes Parallaxx do that. They are leaders on their field, they are some of the best project engineers. We use them because they are the experts, they know more than us with the Traffic Management.


Dan Trotman

Parallaxx provide national training services. We raise a query with them, it gets answered. I’m very impressed with Ettienne, he’s very helpful, very good. Overall I’m really happy with their service.


Jonathan Bridgeford

The team at Parallaxx have been great to work with. Their ongoing advise, support and efficiency with TMP design is invaluable and have enabled the implementation of some of the more complex TTM arrangements and sequences.




Our team is here to help. Fill out the assessment application form by clicking the button below.