Im talking about how to tag the barrier. That thing was **tight** and very 
unusual to find in a major urban area. 

The amount of scars on the poles was amazing. 

The hight restriction barrier (a common thing) is tagged along with maxheight - 
this barrier seemed to be the same - if you are over max you will hit and 
severely damage your vehecle on the barrier - not the bridge or overpass or 
whatever. 

Javbw

> On Sep 8, 2015, at 1:52 PM, Andrew Errington <[email protected]> wrote:
> 
> I don't think a new tag is warranted.  maxwidth=* is fairly unequivocal.  If 
> map users or routers want to interpret it as "max width, but probably not 
> really, there's probably a bit of extra space, I mean, who's going to be that 
> petty" then that's not your problem.
> 
> Since most roads do not have a maxwidth=* restriction it is safe to assume 
> that the road is suitable for any vehicle*, but if you add a maxwidth tag 
> somewhere it is immediately clear it was done purposefully.
> 
> 
> 
>> On 8 September 2015 at 12:38, johnw <[email protected]> wrote:
>> I was driving in Chiba and Saitama yesterday and encountered a couple new 
>> types of barriers. I realized later one is traffic_calming=chicane. 
>> 
>> 
>> The other one is all over rural Japan as traffic_calming=choker on rural 
>> roads that could bypass traffic near the rivers, - but this one is not for 
>> traffic calming, it is for enforcement of maxwidth of the bridge, similar to 
>> barrier=hight_restrictor. 
>> . They put very strong steel poles or guardrails along the sides and center 
>> of the road at the maxwidth + 20 cm of a standard car.  car can pass 
>> (barely, my mirrors were 5 cm away from each pole), but a large dump truck 
>> cannot pass. Both are in areas where commercial dump trucks or other large 
>> vehicles are nearby, but this one is used to enforce access to the narrow 
>> bridge near a very very busy area to keep a massive traffic jam from 
>> occurring from a stuck dump truck. 
>> 
>> https://goo.gl/maps/8KUw7  The maxwidth is signed and guardrails are doing 
>> the job. This is width limited for the very narrow bridge in the background. 
>> 
>> https://goo.gl/maps/3NT9X  The other direction. Poles are used. 
>> 
>> Is this a reason for creating barrier=width_restrictor ? 
>> 
>> 
>> Javbw
>> 
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