[Talk-GB] Access restrictions for lorries above a certain GVM

Mark Goodge mark at good-stuff.co.uk
Thu Sep 27 12:33:52 UTC 2018



On 27/09/2018 11:39, ajt1047 at gmail.com wrote:
> 
> There's quite a lot of "maxweight:conditional" in OSM too, presumably 
> for the same signs where people think they apply to buses too.  I'd 
> agree with what's previously been said in that I don't think the "lorry" 
> sign on it's own applies to buses (but would be happy to be proved wrong 
> on that).

You're right, it doesn't apply to buses.

The HGV restriction sign isn't really a weight restriction at all. It's 
a vehicle category restriction. Obviously, HGVs, by definition, are 
heavy vehicles, but the reasons for imposing the restriction are 
generally unrelated to weight. It's more to do with size, congestion, 
pollution and impact on other road users. And they're usually 
conditional, because the aim is to minimise rather than eliminate HGVs 
on the affected roads. In particular, it's typically done to prevent the 
roads being used as a through route by HGVs, while still allowing 
deliveries to premises within the restriction.

Genuine maximum weight signs, applicable to all vehicles, are rarely 
conditional. Those are typically used where there is a safety-related 
need to restrict vehicle weight (eg, a weak bridge), so conditional 
exceptions would defeat the object.

Mark




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