Seperating Line?what for?
for what is used check box with name "Seperating Line"?
The Map Editing wiki page says "Use the separating line checkbox only when there is a physical barrier on the road between the opposing lanes."m_linc wrote:for what is used check box with name "Seperating Line"?
Totally agree. I think I've advocated for a separation by a medium other than a roadbed (curbs, plants, grass, etc.) that exceeds 5m or so. e.g. a state highway which is a 5-lane (2x2+median/turn lane) at one point splits such that an 18' grass median separates the directions and then later widens to 50'+ around creeks, wetlands, etc. I have this road splitting as soon as the paved turn lane ends.harling wrote:In my experience, the only roads that should be split are limited-access highways (ingress/egress by ramps only), and on those extremely rare occasions when the two directions are so far apart that the client can't match the segment to the GPS coordinates. FWIW, I have roads in Boston that are 3 lanes wide in each direction, with a 10' median or turning lane in the middle, mapped as a single two-way road segment.
I'm going to chime in here that the width of the central barrier should not be the (only) factor when deciding whether to split a road into two one-way segments. As belabored here, splitting roads complicates both the visual map and the audible directions. Remember that the goal is to provide the driver with usable navigation, not to model the physical roadway.AlanOfTheBerg wrote:The Map Editing wiki page says "Use the separating line checkbox only when there is a physical barrier on the road between the opposing lanes."m_linc wrote:for what is used check box with name "Seperating Line"?
So, if there is a curb or small median (not wide enough to warrant to one-way roads), use the separating line checkbox to denote that traffic it not allow to turn across that barrier...
Most of the split roads around here show signs of having been two-way roads at one time. (When you split a two-way road, the original segment that was made one-way still shows two-way connectivity.)WeeeZer14 wrote:In my area it has been a balancing act because some roads on the base map were split into two one way roads (when not really justified) even before a human touched them. Some I'll clean up as I go, but for the most part I just try to make sure they work properly.AlanOfTheBerg wrote:I've seen so many split roads which I really don't think should be. But, this is a community effort and some folks like to be as accurate as possible. I go for the KISS principle.
In my area it has been a balancing act because some roads on the base map were split into two one way roads (when not really justified) even before a human touched them. Some I'll clean up as I go, but for the most part I just try to make sure they work properly.AlanOfTheBerg wrote:I've seen so many split roads which I really don't think should be. But, this is a community effort and some folks like to be as accurate as possible. I go for the KISS principle.
Re: Seperating Line?what for?