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National Boards => General Highway Talk => Traffic Control => Topic started by: US71 on June 21, 2010, 09:30:05 PM

Title: Yellow Strobes at Rail Crossings?
Post by: US71 on June 21, 2010, 09:30:05 PM
Just rolled in from a trip to Missouri. I noticed a railroad crossing in Belton had a single yellow strobe light on each side of the crossing, situated just behind the crossbuck (photos to come). Has anyone noticed something like this elsewhere?
Title: Re: Yellow Strobes at Rail Crossings?
Post by: mightyace on June 21, 2010, 10:14:34 PM
^^

No, I haven't seen of it or heard of it, even in the railroad related magazines.

You might be able to get these pictures published in a railroad magazine for a few bucks.

Please PM me if you are interested in attempting to do this.
Title: Re: Yellow Strobes at Rail Crossings?
Post by: BigMattFromTexas on June 21, 2010, 10:27:00 PM
Never heard of such a thing. It sounds interesting, I'm looking forward to seeing the pictures.
BigMatt
Title: Re: Yellow Strobes at Rail Crossings?
Post by: Revive 755 on June 21, 2010, 11:17:22 PM
This an example?
http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=belton,+mo&sll=37.0625,-95.677068&sspn=52.107327,135.263672&ie=UTF8&hq=&hnear=Belton,+Cass,+Missouri&ll=38.8148,-94.534264&spn=0.025413,0.066047&z=15&layer=c&cbll=38.81484,-94.534175&panoid=HzNJ07jSxJVlbmR7XYJvVw&cbp=12,303.27,,0,-2.78 (http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=belton,+mo&sll=37.0625,-95.677068&sspn=52.107327,135.263672&ie=UTF8&hq=&hnear=Belton,+Cass,+Missouri&ll=38.8148,-94.534264&spn=0.025413,0.066047&z=15&layer=c&cbll=38.81484,-94.534175&panoid=HzNJ07jSxJVlbmR7XYJvVw&cbp=12,303.27,,0,-2.78)

I'm gonna guess the yellow strobe lets the train engineering know that a stoplight preemption (as in the stoplights go red for any movement that would cross the track) is working at the two adjacent stoplights on North Street.

Though if they went through the trouble install such a thing, I'm surprised they didn't just add a pair of flashing lights while they were at it.
Title: Re: Yellow Strobes at Rail Crossings?
Post by: US71 on June 21, 2010, 11:49:45 PM
Quote from: Revive 755 on June 21, 2010, 11:17:22 PM
This an example?
http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=belton,+mo&sll=37.0625,-95.677068&sspn=52.107327,135.263672&ie=UTF8&hq=&hnear=Belton,+Cass,+Missouri&ll=38.8148,-94.534264&spn=0.025413,0.066047&z=15&layer=c&cbll=38.81484,-94.534175&panoid=HzNJ07jSxJVlbmR7XYJvVw&cbp=12,303.27,,0,-2.78 (http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=belton,+mo&sll=37.0625,-95.677068&sspn=52.107327,135.263672&ie=UTF8&hq=&hnear=Belton,+Cass,+Missouri&ll=38.8148,-94.534264&spn=0.025413,0.066047&z=15&layer=c&cbll=38.81484,-94.534175&panoid=HzNJ07jSxJVlbmR7XYJvVw&cbp=12,303.27,,0,-2.78)


That's it exactly! That's the actual site I found.
Title: Re: Yellow Strobes at Rail Crossings?
Post by: US71 on June 23, 2010, 10:21:00 AM
Just got a photo uploaded

(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Ffarm2.static.flickr.com%2F1345%2F4727624852_eeaed0da99.jpg&hash=7fa5f78403ff3fea4a7abcb6159de358fdb6d7bf)
Title: Re: Yellow Strobes at Rail Crossings?
Post by: cjk374 on June 23, 2010, 03:31:40 PM
I also notice the EXEMPT sign under the crossbucks.  This indicates the track is no longer used by trains.  This is very strange to me. 
Title: Re: Yellow Strobes at Rail Crossings?
Post by: agentsteel53 on June 23, 2010, 03:42:37 PM
Quote from: cjk374 on June 23, 2010, 03:31:40 PM
I also notice the EXEMPT sign under the crossbucks.  This indicates the track is no longer used by trains.  This is very strange to me. 

is that what it means?  If so, why not just remove the crossbucks, and instead put in some sign that says "unused railroad - rough crossing" or the like, to indicate to drivers that attention is to be paid not towards the possibility of a train approaching, but rather to slow down a bit since the road quality diminishes temporarily.  Maybe a yellow diamond sign with an advisory speed underneath it?
Title: Re: Yellow Strobes at Rail Crossings?
Post by: bugo on June 23, 2010, 03:45:09 PM
Quote from: agentsteel53 on June 23, 2010, 03:42:37 PM
Quote from: cjk374 on June 23, 2010, 03:31:40 PM
I also notice the EXEMPT sign under the crossbucks.  This indicates the track is no longer used by trains.  This is very strange to me. 
is that what it means?  If so, why not just remove the crossbucks, and instead put in some sign that says "unused railroad - rough crossing" or the like, to indicate to drivers that attention is to be paid not towards the possibility of a train approaching, but rather to slow down a bit since the road quality diminishes temporarily.  Maybe a yellow diamond sign with an advisory speed underneath it?

The "exempt" sign means that school buses, trucks carrying flammable materials, etc. don't have to stop for the crossing.  The crossbucks are left up because these tracks are (sometimes anyway) occasionally used.
Title: Re: Yellow Strobes at Rail Crossings?
Post by: agentsteel53 on June 23, 2010, 04:02:28 PM
Quote from: bugo on June 23, 2010, 03:45:09 PM

The "exempt" sign means that school buses, trucks carrying flammable materials, etc. don't have to stop for the crossing.  The crossbucks are left up because these tracks are (sometimes anyway) occasionally used.

usually exempt intersections do not have flashing lights - how is one to determine if a train is coming, then, without coming to a stop?  Or is it sufficient to slow down enough to make a judgement?
Title: Re: Yellow Strobes at Rail Crossings?
Post by: roadfro on June 23, 2010, 08:42:05 PM
Quote from: agentsteel53 on June 23, 2010, 04:02:28 PM
usually exempt intersections do not have flashing lights - how is one to determine if a train is coming, then, without coming to a stop?  Or is it sufficient to slow down enough to make a judgement?

Not always.

There's a couple of Exempt crossings on US 95 around the Hawthorne Army Depot that still have overhead lights and gate arms.

Another example from years past is US 93/95 at Railroad Pass between Henderson and Boulder City, NV. For years, the railroad ties remained in the roadway, with "Exempt" signs under the crossbucks and the crossing lights still mounted overhead. At some point (maybe when I-515 was completed around 1994), NDOT pulled up the tracks in the roadway--although this AA Roads photo (https://www.aaroads.com/west/nevada515/i-515_sb_exit_054_05.jpg) shows that the lights and at least one crossbuck without an exempt plaque are still mounted (exempt plaques are present on the round RR advance warning signs). The crossing lights are probably still standing as an homage to the name of the pass and the history of this railroad spur playing an important part in the ferrying of construction materials at Hoover Dam--oddly, the pass isn't marked with green elevation signs as is typical for NDOT.
Title: Re: Yellow Strobes at Rail Crossings?
Post by: bugo on June 23, 2010, 11:12:34 PM
There are two railroad crossings on freeways in Missouri: US 60 just west of US 65 (in the process of removal) and US 63 north of I-70.
Title: Re: Yellow Strobes at Rail Crossings?
Post by: realjd on June 24, 2010, 10:12:09 AM
Quote from: agentsteel53 on June 23, 2010, 04:02:28 PM
usually exempt intersections do not have flashing lights - how is one to determine if a train is coming, then, without coming to a stop?  Or is it sufficient to slow down enough to make a judgement?

Since most of the exempt crossings that I have seen have been on little-used spurs going to factories, I always assumed that the train was going slow enough to essentially stop before crossing the road.
Title: Re: Yellow Strobes at Rail Crossings?
Post by: cjk374 on June 24, 2010, 04:02:19 PM
Quote from: US71 on June 23, 2010, 10:21:00 AM
Just got a photo uploaded

(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Ffarm2.static.flickr.com%2F1345%2F4727624852_eeaed0da99.jpg&hash=7fa5f78403ff3fea4a7abcb6159de358fdb6d7bf)

The tracks (what little is shown) look nice...big rail, some ballast, decent looking ties.  Where was this pic shot?
Title: Re: Yellow Strobes at Rail Crossings?
Post by: US71 on June 24, 2010, 04:21:51 PM
Quote from: cjk374 on June 24, 2010, 04:02:19 PM
Quote from: US71 on June 23, 2010, 10:21:00 AM
Just got a photo uploaded

(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Ffarm2.static.flickr.com%2F1345%2F4727624852_eeaed0da99.jpg&hash=7fa5f78403ff3fea4a7abcb6159de358fdb6d7bf)

The tracks (what little is shown) look nice...big rail, some ballast, decent looking ties.  Where was this pic shot?


Belton, MO
Title: Re: Yellow Strobes at Rail Crossings?
Post by: Revive 755 on June 24, 2010, 06:06:48 PM
Quote from: agentsteel53 on June 23, 2010, 04:02:28 PM
usually exempt intersections do not have flashing lights - how is one to determine if a train is coming, then, without coming to a stop?  Or is it sufficient to slow down enough to make a judgement?

I think it may depend on the state, but I think the train has to be prepared to stop quickly for exempt crossing in Missouri.

As for exempt crossings not having active signals or seeing any trains (again the latter varies from state to state - Iowa only allows exempt crossings when the track is paved over or only the part of the track in the road remains), the follow picture from the A-B Brewery area on Broadway in St. Louis is good proof otherwise:
http://www.rxrsignals.net/Missouri/St_Louis/Broadway/16.jpg (http://www.rxrsignals.net/Missouri/St_Louis/Broadway/16.jpg)
Title: Re: Yellow Strobes at Rail Crossings?
Post by: roadfro on June 24, 2010, 09:39:54 PM
"Exempt" has nothing to do with the train, but rather the drivers of vehicles. An exempt crossing signifies to drivers of buses, vehicles carrying passengers for hire, or vehicles carrying explosive materials that a full stop is not required prior to crossing the tracks. A stop would still be required if there is minimal sight or obviously if a train is approaching.

The requirements for use of the exempt plaque will vary by state. Use of the plaque is governed by 'option' statements in the national MUTCD.