UKTC Archive

RE: [EXTERNAL] Windshield/Drive-by | Speed Limit

Subject: RE: [EXTERNAL] Windshield/Drive-by | Speed Limit
From: Brewster, Ian
Date: Dec 02 2019 11:01:41
Also to point out that those country style highways tend not to have 
individual specimens planted free of bushes/undergrowth where you could 
otherwise view the tree bases with a  minimum 180 degree visibility. More 
likely those trees would be narrow strips, self sown/suckers all competing 
for light and growing towards the highway centre having extensive lever arms.
In these cases it may be more a case of mismanagement i.e. trees should have 
thinned at an earlier stage to reduce competing growth.
It was suggested that passing a cable/wire through the crowns of drawn up 
trees to provide a fall arrest type system could provide a solution and those 
failures easily identified during a drive by survey. Comparing this approach 
to the expense of complete tree growth eradication/felling or light thinning 
at a late stage may not be seen as favourable.
Also to point out that those country style highways tend not to have 
individual specimens planted free of bushes/undergrowth where you could 
otherwise view the tree bases with a  minimum 180 degree visibility. More 
likely those trees would be narrow strips, self sown/suckers all competing 
for light and growing towards the highway centre having extensive lever arms.
In these cases it may be more a case of mismanagement i.e. trees should have 
thinned at an earlier stage to reduce competing growth.
It was suggested that passing a cable/wire through the crowns of drawn up 
trees to provide a fall arrest type system could provide a solution and those 
failures easily identified during a drive by survey. Comparing this approach 
to the expense of complete tree growth eradication/felling or light thinning 
at a late stage may not be seen as favourable.



From: uktc-request@xxxxxx.tree-care.info <uktc-request@xxxxxx.tree-care.info> 
On Behalf Of Howe, Ron
Sent: 02 December 2019 10:12
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: RE: [EXTERNAL] Windshield/Drive-by | Speed Limit

I do not see how you can set an appropriate speed as it is irrelevant. The 
speed you choose is governed by the type and level of defects your looking 
for, the road conditions, your ability to concentrate while manoeuvring on a 
road dependant on those conditions, your own ability to spot problems and 
react, the number of trees involved, the urgency and so on. We all spot 
things, from time to time, that look out of place but we miss loads. You 
might therefore say a walking pace speed of about 4 mph would be reasonable 
to pick up clear and obvious hazardous trees but, you could not claim you 
have surveyed the tree stock. We've all spent time looking for a reported 
fault and had to get out the car to actually find it ... anyone who would put 
their name to such a scheme would be a very brave and possibly foolish person.

ATB.

Ron Howe
Tree Officer (Planning)
Mole Valley District Council
Tel. 01306 XXX XXX

-----Original Message-----
From: 
uktc-request@xxxxxx.tree-care.info<mailto:uktc-request@xxxxxx.tree-care.info> 
<uktc-request@xxxxxx.tree-care.info<mailto:uktc-request@xxxxxx.tree-care.info>>
 On Behalf Of David Evans
Sent: 25 November 2019 09:58
To: UK Tree Care 
<uktc@xxxxxx.tree-care.info<mailto:uktc@xxxxxx.tree-care.info>>
Subject: [EXTERNAL] Windshield/Drive-by | Speed Limit

Warning: email from outside of MVDC - if in any doubt do not open links or 
attachments, or carry out requested actions ________________________________


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 
Defects'*?



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 
forum.



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 
license.



*Obvious Tree Defects Guide

https://tinyurl.com/y679ucl4<https://tinyurl.com/y679ucl4>



Cheers



Acer Ventura










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http://www.boskytrees.co.uk/<http://www.boskytrees.co.uk/>
This MVDC email is only intended for the individual or organisation to whom 
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please notify the sender immediately and then delete it.



--
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy
http://www.boskytrees.co.uk/<http://www.boskytrees.co.uk/>
NPS
 From: uktc-request@xxxxxx.tree-care.info 
<uktc-request@xxxxxx.tree-care.info> On Behalf Of Howe, Ron
Sent: 02 December 2019 10:12
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: RE: [EXTERNAL] Windshield/Drive-by | Speed Limit

I do not see how you can set an appropriate speed as it is irrelevant. The 
speed you choose is governed by the type and level of defects your looking 
for, the road conditions, your ability to concentrate while manoeuvring on a 
road dependant on those conditions, your own ability to spot problems and 
react, the number of trees involved, the urgency and so on. We all spot 
things, from time to time, that look out of place but we miss loads. You 
might therefore say a walking pace speed of about 4 mph would be reasonable 
to pick up clear and obvious hazardous trees but, you could not claim you 
have surveyed the tree stock. We've all spent time looking for a reported 
fault and had to get out the car to actually find it ... anyone who would put 
their name to such a scheme would be a very brave and possibly foolish person.

ATB.

Ron Howe
Tree Officer (Planning)
Mole Valley District Council
Tel. 01306 XXX XXX

-----Original Message-----
From: 
uktc-request@xxxxxx.tree-care.info<mailto:uktc-request@xxxxxx.tree-care.info> 
<uktc-request@xxxxxx.tree-care.info<mailto:uktc-request@xxxxxx.tree-care.info>>
 On Behalf Of David Evans
Sent: 25 November 2019 09:58
To: UK Tree Care 
<uktc@xxxxxx.tree-care.info<mailto:uktc@xxxxxx.tree-care.info>>
Subject: [EXTERNAL] Windshield/Drive-by | Speed Limit

Warning: email from outside of MVDC - if in any doubt do not open links or 
attachments, or carry out requested actions ________________________________


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 
Defects'*?



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 
forum.



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 
license.



*Obvious Tree Defects Guide

https://tinyurl.com/y679ucl4<https://tinyurl.com/y679ucl4>



Cheers



Acer Ventura










--
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy 
http://www.boskytrees.co.uk/<http://www.boskytrees.co.uk/>
This MVDC email is only intended for the individual or organisation to whom 
or which it is addressed and may contain, either in the body of the email or 
attachment/s, information that is personal, confidential and/or subject to 
copyright. If you are not the intended recipient, please note that copying or 
distributing this message, attachment/s or other files associated within this 
email, is strictly prohibited. If you have received this email in error, 
please notify the sender immediately and then delete it.



--
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy
http://www.boskytrees.co.uk/<http://www.boskytrees.co.uk/>



-- 
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy
http://www.boskytrees.co.uk/

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