[OSM-talk] Roundabouts - why is a separate segment required?

[Andy Townsend]

On 14/02/2018 18:57, Dave F wrote:
>
>
> On 14/02/2018 18:32, Andy Townsend wrote:
>> Having one exit node not joined to the next entry node better 
>> represents the real-world situation*.
>
> Disagree.
> Sharing a node should make no difference to the real world or a 
> router's perception of it. 

With separate nodes, you travel along the roundabout way for a small 
distance (as you do in real life).  With a shared node, you don't. 
They're topologically different.