On Wed, Oct 27, 2010 at 9:14 AM, <j...@jfeldredge.com> wrote: > I have never seen a stop sign at a railroad crossing.
I have. They used to be quite prevalent. Now they're more rare, as most places have installed active warning devices and gotten rid of the stop signs. Unfortunately, I don't remember exactly where I was last time I saw one, or I'd check it out on Google Street View. On the other hand, it only took a couple minutes of searching to find this news story: http://www.abbevillenow.com/view/full_story/9581389/article-New-stop-signs--markings-installed-at-railroad-crossing-on-Hospital-Drive?instance=home_news_lead > Buses are required by law to stop before a railroad crossing, and open the > bus door so that the driver can better > hear if a train is approaching. Some other commercial vehicles routinely > stop as well, but private vehicles aren't > required to stop. Illinois Rules of the Road: "When approaching a railroad crossing you must stop within 50 feet to 15 feet if there is a posted STOP sign, the electric signal is flashing or the crossing gate is lowered." (http://www.cyberdriveillinois.com/publications/rules_of_the_road/rr_chap10.html) > If there is a jurisdiction that places stop signs at each railroad crossing, > I would be interested in learning where it > is. I don't know of any jurisdictions that place them at *each* railroad crossing. Anyway, I thought we were saying that railroad crossings *were* defined as intersections. They certainly would fit that definition of "a node shared by three or more way segments". On Wed, Oct 27, 2010 at 9:26 AM, M∡rtin Koppenhoefer <dieterdre...@gmail.com> wrote: > really I don't see the point of this discussion anymore: I already > question the benefit of tagged stop signs in general, as a stop sign > itself requires very few seconds of travel time, while a unregulated > crossing with a lot of traffic from the right might require a lot > more, it all depends merely on traffic density (which itself is quite > dependent on the time). Routers are not the only users of OSM data. > But why should we conduct research on > "jurisdiction that places stop signs at each railroad crossing" or > stuff like this? No one's forcing you to do any research on anything. > Is our way of mapping stop signs (or better the "requirement to stop") > depending on this? One proposal for mapping stop signs is that the stop sign always faces opposite the nearest intersection. In order for a computer to determine the nearest intersection, it has to have a precise definition of intersection. Whether or not railroad crossings count as intersections would be a key part of that definition. _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
