UKTC Archive

Windshield/Drive-by | Speed Limit

Subject: Windshield/Drive-by | Speed Limit
From: David Evans
Date: Nov 25 2019 09:58:26
I'm in Hobart at the moment.  Helping the Tasmanian Government deliver a
reasonable, proportionate, and reasonably practicable approach to tree
risk-benefit assessment and management, following a coronial inquest into a
death on one of their roads.


One of the issues we were exploring today was the specification for a
windshield/drive-by specification.  I've raised this on here before, when
trying to find out whether anyone had actually written one.  It turns out
that, so far, no one has does (beyond that they will carry one out).


The straw poll I'd value your collective opinion on, is;


A driver and a spotter.  Both sides of the road driven.  At what speed do
you reckon a windshield/drive-by should be carried out to pick up 'Obvious


For example, is driving at around 30mph going to reveal significantly less
obvious defects than driving at about 10mph?  Or significantly more obvious
defects than driving somewhere close to 50mph?


If you had to choose a speed limit, what would it be?


If you're uncomfortable posting your opinion on here, please email me off


As with all of VALID's publications, because it's a not-for-profit, when
this is completed I'll happily share with everyone under a creative commons


*Obvious Tree Defects Guide




Acer Ventura




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