Tag Archives: highway engineering

Turkish delight

In a recent post I expressed some doubt about the usefulness of the UK’s TD 9/93 (part of the “Design Manual for Roads and Bridges” (DMRB)). If any users of TD 9/93 also have some doubts, help may be available … Continue reading

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UK design guideline TD 9/93 – time for a rethink ?

The UK’s principal guideline on the design of roads is the “Design Manual for Roads and Bridges” (DMRB).  Wikipedia says the DMRB “is a series of 15 volumes that provide standards, advice notes and other documents relating to the design, … Continue reading

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Road design – road types

In recent posts I have discussed the idea of the “technical environment” for road design. One of the seven technical factors which I suggest describe this environment is “road type”. 

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Road design – the vehicle environment

This is the third of three posts which refer to the presentation by Dr. John Rolt of the UK’s TRL (ref. 2211). In the previous post, I said that “It is easy to read through a document with road design standards, … Continue reading

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Road design – the technical environment

This is the second of three posts which refer to the presentation by Dr. John Rolt of the UK’s TRL (ref. 2211). Discussion It is easy to read through a document with road design standards, check out the values for … Continue reading

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3D road design

Two authors from the National Technical University of Athens recently published a paper on 3D road design. You can find copies of the paper online. It is called”Three dimensional road design by applying differential geometry and conventional design approach criteria” … Continue reading

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NMT in developing and developed countries

There is a page on the Internet (here) which lists different modes of transport, grouped under the headings of: Intermediate Means of Transport (IMT) Non-Motorised Transport Modes (NMT) The two lists partly contain the same modes, so they could be … Continue reading

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Road gradient – (1) definition and vehicle performance

Definition of gradient In terms of the vertical alignment of a road, one of the primary design parameters is gradient. A good definition of gradient is given in (ref. 148), which says:

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Simplification of standards (4) primary and local documents

In 2011 Los Angeles County, USA published the “Model streets design manual” (ref. 2206). The document is worth reading in itself. But in terms of the simplification of its standards the website (here) gives an interesting explanation of its purpose:

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Argentina – mountain roads course

Argentina’s University of San Juan has a special School of Engineering of Mountain Roads (Escuela de Ingeniería de Caminos de Montaña, EICAM). Applications for the School’s doctorate in mountain road engineering close in a couple of days. I believe India … Continue reading

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