Page updated: 30 August 2007
RTS 18 On road tracking curves for heavy vehicles 2007 provides guidance to road controlling authorities and engineers in the geometric design of roads and intersections, and replaces a similar document New Zealand on road tracking curves which was published by the Land Transport Safety Authority in October 1995.
The document is divided into two sections, with the first section providing a general guide to the types of design vehicles that should be used and also which design vehicle to use if other vehicle types are being designed for.
The second section includes a suite of tracking curves for the selected design vehicles turning through a range of different angles at different radii.
The standard design vehicle types have been reviewed and the number of them has been reduced from seven (in 1995) to four (2007). The changes in the 2007 document include:
Title | Download |
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RTS 18 text – A4 size, 20 pages (Please note the copyright statement and disclaimer on page 2 of the text) |
[PDF, 265 KB] |
The curves are provided in two formats: PDF and JPG (which can be imported into various graphics and drafting software packages).
Title | Download |
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2007 On road tracking curves – A3 size, 17 pages | [PDF, 11 MB] |
2007 On road tracking curves – A3 size, 17 JPG files as follows: | |
Sheet 1 – Medium rigid truck, 10 metre turn radius | [JPG, 1.1 MB] |
Sheet 2 – Medium rigid truck, 12.5 metre turn radius | [JPG, 1.1 MB] |
Sheet 3 – Medium rigid truck, 15 metre turn radius | [JPG, 1.1 MB] |
Sheet 4 – Medium rigid truck, 20 metre turn radius | [JPG, 1.1 MB] |
Sheet 5 – Medium rigid truck, 25 metre turn radius | [JPG, 1.1 MB] |
Sheet 6 – Large rigid truck, 12.5 metre turn radius | [JPG, 1.2 MB] |
Sheet 7 – Large rigid truck, 15 metre turn radius | [JPG, 1.1 MB] |
Sheet 8 – Large rigid truck, 20 metre turn radius | [JPG, 1.1 MB] |
Sheet 9 – Large rigid truck, 25 metre turn radius | [JPG, 1.2 MB] |
Sheet 10 – Semi-trailer, 12.5 metre turn radius | [JPG, 1.2 MB] |
Sheet 11 – Semi-trailer, 15 metre turn radius | [JPG, 1.2 MB] |
Sheet 12 – Semi-trailer, 20 metre turn radius | [JPG, 1.2 MB] |
Sheet 13 – Semi-trailer, 25 metre turn radius | [JPG, 1.2 MB] |
Sheet 14 – Tour coach, 12.5 metre turn radius | [JPG, 1.1 MB] |
Sheet 15 – Tour coach, 15 metre turn radius | [JPG, 1.1 MB] |
Sheet 16 – Tour coach, 20 metre turn radius | [JPG, 1.1 MB] |
Sheet 17 – Tour coach, 25 metre turn radius | [JPG, 1.1 MB] |