Technical Advice
Expert Traffic Engineering Counsel
Sometimes a job hits a problem the standard drawings don't answer. A barrier that won't fit its deflection inside the available offset, a staging plan on a live carriageway, a site where two standards pull against each other. That's when you want senior engineering judgement, not another template.
We've worked these calls across 15+ years, from small council jobs to North East Link, the West Gate Tunnel, Metro Tunnel, the Level Crossing Removal Program and Barwon Heads Road. We tell designers, contractors, councils and developers what'll actually get built and signed off in Victoria.
Barrier advice lives in the detail. We work to the Austroads Guide to Road Design Part 6 and AS/NZS 3845, check the system's working width and deflection against design speed and geometry, and confirm the hazard sits clear of the deflection envelope. Get the offset wrong and the barrier won't protect what it's there for.
Building on a live road is where good plans come unstuck. We sit in the workshop, mark up the staging with the contractor, and pressure-test it against sight distance, merges and the realities of getting plant in and out. The aim is a sequence that's safe, buildable and won't stall at the review gate.
We scale the output to the decision. A quick design-team question might be a marked-up plan and a short memo; a knotty barrier or staging problem gets a structured advice note with the constraints, options, calcs and a recommendation you can take to DTP, council or the assurance reviewer.
When the answer isn't in the standard drawings, like a barrier that can't make its deflection in the available offset or staging on a live high-speed road. Also when a DTP or council reviewer has raised something you need a defensible position on.
We check the system's working width and dynamic deflection against design speed, vehicle type and geometry, to confirm the hazard or worker sits outside the deflection envelope. It's the first thing a reviewer looks at, so we get it right early.
A focused question, like confirming a barrier offset, is often a few days. A complex constructability problem with options and calcs usually runs one to two weeks, and we'll prioritise where the program demands it.
Contact us to discuss your traffic engineering challenge.