Depth Gauge - 826/826.1 https://members.theihe.org/forums/posts.aspx?group=214541&topic=1489270 Sun, 7 Jun 2026 17:13:51 GMT Thu, 23 May 2019 13:19:35 GMT Copyright © 2019 Institute of Highway Engineers Depth Gauge - 826/826.1 https://members.theihe.org/forums/posts.aspx?group=214541&topic=1489270 https://members.theihe.org/forums/posts.aspx?group=214541&topic=1489270
JulieW 
I've just discovered that the above depth gauge is no longer permitted under TSRGD 2016. Does anyone know why, I can't find any discussion about it? Is there a replacement gauge I am missing?
Thanks
]]> Thu, 23 May 2019 14:19:06 GMT https://members.theihe.org/forums/posts.aspx?group=214541&topic=1489271 https://members.theihe.org/forums/posts.aspx?group=214541&topic=1489271 May 2017

I asked this very question at the DfT's Traffic Signs Technical Working Party in June 2016. The answer I got (as it appears in the official minutes) was: "WD [DfT] replied that it could possibly be installed using the Planning Regulations, whilst MY [Highways England] thought that the Environment Agency had their own powers to install these".

More recently, a draft of the new Traffic Signs Manual Chapter 4 has been given a limited circulation for 'peer review'. Whilst discussing fords, it makes no mention of depth gauges. The IHE made strong representations that they should be included, as their omission from Chapter 4 implies that DfT thinks these devices are no longer necessary and that authorities may remove them. The IHE considers that would be dangerous and could lead to lives being lost.]]> Thu, 23 May 2019 14:19:18 GMT https://members.theihe.org/forums/posts.aspx?group=214541&topic=1489272 https://members.theihe.org/forums/posts.aspx?group=214541&topic=1489272 November 2018

I am pleased to say that the water depth indicator is illustrated in the newly published version of TSM Chapter 4, with a note that it needs to be authorised by the relevant national authority.

That's great news, but a somewhat backward step for a previously prescribed signs to now need site authorisation. Also, it's a pity that DfT didn't accede to IHE's other suggestion for this sign - to replace "M" with "m" as the correct international abbreviation for metres.]]> Thu, 23 May 2019 14:19:27 GMT https://members.theihe.org/forums/posts.aspx?group=214541&topic=1489273 https://members.theihe.org/forums/posts.aspx?group=214541&topic=1489273 December 2018

I hope the logic was *new* sites requiring depth indicators should not be built; hopefully replacement of existing ones will not require site specific authorisation.

Likewise I suppose where flooding happens under bridges the argument is "well fix the flooding"?

Hopefully a future TSRGD will undo what appears to be a blunder.]]> Thu, 23 May 2019 14:19:35 GMT