“Findability” and road design standards

I have just published some notes on “side friction”, which you can download (for example) from Academia. The document has a “discussion” section which in part looks at how current design standards fail their users. Examples of these failures include inconsistent terminology and lack of traceability.

Another one, which I plan to add to the next version of the document, is “findability“, in the sense of “is the information I am looking for, easy to find?” To take two examples, in a Tanzanian standard (ref. 294) the information is easy to find, whereas in the USA’s AASHTO document (ref.831) it is not so easy to find.

Of course, it does not follow that, even if the information is easy to find, the information is correct.

294 Tanzania, Road Geometric Design Manual (2011 ed), Ministry of Works 2011
831 USA – A policy on the geometric design of highways and streets 2011, AASHTO 2011


About roadnotes

Robert Bartlett is an international consultant with over 30 years of professional experience as a highway and traffic engineer with leading companies and organisations in several countries, including Germany, China (Hong Kong), Qatar and the UK. Specialised in urban studies, transport and the use of GIS, research has included new ideas on subjects such as the study of social justice using GIS, the dimensions of vehicles, and comparative geometrics (highways and transport).
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