Showing posts with label trails. Show all posts
Showing posts with label trails. Show all posts

Thursday, January 19, 2017

Bikeways : State of the Art, 1974 (Government Report)

Bikeways : state of the art, 1974 / Dan Smith, Jr., author ; prepared for Federal Highway Administration.
Main Author: Smith, Dan.
Language(s): English
Published: Springfield, Va. : distributed by National Technical Information Service, U.S. Dept. of Commerce, 1974.
Subjects: Cycling.
Cycling > United States.
Bicycle trails.
Note: DeLeuw, Cather and Company, performing organization.
Physical Description: v, 97 p. : ill. ; 28 cm.

Available as a public domain government funded document from HathiTrust - https://catalog.hathitrust.org/Record/007473274

It sounds to much like today . . .
With this growth in cycling popularity and utilization have come both a demand for good recreational and utility oriented facilities on which to ride and a concern for the increase in bike involved accidents. The concern for accidents appears well founded despite the fact that only the gross numbers of accidents occurring are known with a reasonable level of accuracy. Very little is known about accident rates associated with the gross numbers. Despite this lack of accident rate information, the following national statistics are significant. In l962, some 570 cyclists were killed and 30,000 injured in bicycle - motor vehicle accidents. By l968, the corresponding figures had grown to 800 killed and 38,000 injured. The National Safety Council's statistics for l972 show l00,000 bicycle - motor vehicle accidents and l,l00 fatalities.

As a result of the growing concern on the part of both the public and public officials at all levels, the past several years have been marked by a veritable blizzard of bicycle safety studies, studies for development of bikeway design and locational criteria, cyclist safety education programs, and provision of physical facilities for bicycles. But the sudden rise in activity and the demand for programs and facilities found planners and designers unprepared and uncertain as to means of responding to these demands. As a result, programs have been planned on the basis of intuitive judgment, what knowledge could be gleaned from European literature on the subject, and trial and error. The result of the past four or five years independent activities undertaken in state jurisdictions across the country has been a broad range of studies, plans, programs, design manuals and in-use facilities with substantial variance and even conflict in recommended practices. The results of initial use and experiences in various localities are now becoming available and it appears that differences in design practices have significant implication for utility and safety.


Thursday, March 10, 2016

Arlington Makes the Trails Smoooooth

Untitled
Looking towards the south end of National Airport along Four Mile Run

Concrete trail areas and where such trails meet asphalt can have problems - a typical quick response is to fill in with asphalt. Often the results do not make the situation better and may make it worse. In this area where several bridges cross over the concrete trail along Four Mile Run, there were several such asphalt repairs that were not very well executed. There were also several places where concrete blocks did not meet evenly (but were not filled in with asphalt). Today Arlington County had these problem repaired by grinding down the concrete to create smooth concrete! Yay! Well done!

The example shown in the photograph above was dangerous for inexperienced riders - the raised concrete running in the direction a rider was heading could easily result in a crash if someone tried to go across the imperfection when passing someone, for example. This is a lot safer and better. There were about a dozen spots along here where such fixes were made today. Really nice.



Monday, March 7, 2016

"Bicycles Are Prohibited Off the Mount Vernon Trail"

Bicycles are prohibited off the Mount Vernon Trail
This sign, and another pointing the opposite direction, appeared Friday

In the past year or so, it has become popular for cyclocross type cyclists to ride along near the trail, but not on the trail, near Gravelly Point. (This sign is stuck in the ground right next to it.) The regular riders have created a kind of dedicated rut-trail that winds around under the railway bridge away from the asphalt trail. The people look like they are having fun. Apparently with the onset of better cycling weather, the National Park Service has decided to put a stop to it. I am not going to look up the Code of Federal Regulations 4.30, but really? It covers this situation? Hmmm.

What surprised me most today was that the two signs were still there! No one pulled them out of the ground and tossed them into the Potomac (or elsewhere).

I would be a little more sympathetic if the Park Service had done even a little trail maintenance in the last five years or so. Or did anything during snow.

BikeArlington read this and wrote me: . . . last fall, a group of cyclocross racers met with NPS who were concerned about the trail sections that came dangerously close to the GW Parkway (literally cornering at speed just a few feet from traffic). And while NPS is open to the idea of using that space, because it is federal parkland, an environmental study needs to be conducted before the NPS can officially condone such use. Unfortunately, that study . . . takes quite some time. . .

Thursday, March 3, 2016

Pre-treating Trails in Arlington VA

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Trail along Four Mile Run near where I live

Tonight snowy weather of some sort is promised and Arlington has pre-treated the trails with some sort of fluid. That is what the parallel dark lines are. Pretty nice!

I confess I am not sure how much this pre-treatment helps. I live down the street from a high school in Arlington and they do it on our street assiduously before every storm, but once the snow starts to fall - hmm. Still, it is great to see the county government providing good service for trail users (including but not only cyclists), and they have done a good job with plowing trails too.

Sunday, January 31, 2016

Starting Up Bicycle Commute After 2 Feet of Snow

Snow, Washington D.C., car
Snow in Washington DC, January 1922 (from the Library of Congress)

Last weekend two feet of snow (give or take) fell from the sky, closing the government completely for several days, then various kinds of delayed arrival and the like through Friday. I teleworked through Thursday, returning to work on Friday - using Metro.

I am not crazy about using Metro, but I didn't feel like experimenting with the snow on the trails that day.

Yesterday, Saturday, I went about a third of the way to work, to see what conditions are like on the bike trails between my house and the Potomac river where I cross the 14th street bridge into DC.

Plowed trail Arlington County VA
Bicycle trail plowed by Arlington County

The trail for about a half mile from my house to the Four Mile Run Trail was not plowed, but it was mostly clear anyway. The Four Mile Run trail near Shirlington was plowed, continuing on in all the way to the Potomac near the south end of National Airport. Arlington County uses a Gator or something similar; it is difficult for them to stay on the trail consistently, as you can see by the tread marks in the grass where the small plow was off the trail for a while.

Mt Vernon Trail near south end National Airport
Mt Vernon trail near south end of National Airport

Once the trail leaves Arlington County and runs into the Mt Vernon trail, the plowing stops, and the conditions are much more mixed - that is, there is more snow and ice. I can route myself through Crystal City to avoid some of this; I'll see how it goes tomorrow.



Saturday, June 1, 2013

Plywood Trail Replacement Wearing Out

DSCN2389
The problem as of June 1 2013 - 100s of pounds of cyclists pounding these plywood sheets, day after day

About 1 3/4 miles from my house, along Four Mile Run on the bike (or mixed use) trail, Arlington County installed a temporary (one hopes) bypass storm drain pipe across the trail during the first week of May (2013). They built a ramp (or bridge) over this so that the trail is still usable. It is built out of plywood and the construction techniques leave something to be desired now that it is clear that it is going to be up for longer than say a week. The construction, not great in the first place, is gradually failing. Lawsuit alert!

The original execution had plain sheets of unpainted or treated plywood such that when it rained they were a bit slick. It struck me as obvious that the boards should be painted or treated with something and at that time throw some sand into the mix to add some traction. So I contacted this County with this brilliant observation:

My comment, made May 8 2013

Subject : WEBSITE COMMENT: Temp bridge over pipe -- ATTN: trails

Comments : On the bike trail along s glebe rd about 1/4 mile s of I-395 there is a new temporary plywood ramp over a pipe. This ramp is getting tire residue and is plain wood. When wet it is slick for bicycles. Can't you paint it and throw some sand on the paint for safety?

Thank you.


The County is fairly responsive. I was slightly amused by the notion that "exterior surfaces are slippery when wet" as being something they couldn't address but whatever.

First reply, May 9 2013:

Michael,

Thank you for writing about the ramp on the Four Mile Run Trail at South Glebe Road. Most exterior surfaces will be slippery when wet, but I will forward your observation to the unit who is working with the contractor. They may have a surfacing material with more traction for the ramp.


I was surprised (and I suppose pleased) to get a follow-up message soon after.

Second reply, May 10 2013:

Good Morning Michael,

Again, thank you for notifying trails of the condition of the bike trail ramp during the rain. The contractor has placed non-skid mats on the ramp to increase friction when bikes ride over it. Please see the attached picture for your reference. If you have any additional concerns in regards to the temporary bike ramp on S Glebe Rd, please do not hesitate to contact me.


BridgeAsBuilt
Photo sent me by County showing how they solved the problem of slickness during rain (as of May 10)

This is a case of what happens when one (in this case me) is not very clear. I don't really see how strips like this solve the overall problem since there is plenty of area that is not covered by the traction material. And it doesn't address what is turning out to be more of a problem, which is that the untreated/unpainted boards are suffering under a higher level of pounding/usage than the County or this contractor imagined. I would not have guessed that a temporary structure of this quality was intended to serve this long - and apparently longer. Who knows how long.

DSCN2385
June 1 - looks OK at this distance, although one railing clearly bowing in

DSCN2386
Closer examination reveals somewhat wavy deck

The contractor chose to run the plywood longwise but it wasn't wide enough to cover the entire deck, so they have two sheets of plywood, one larger and one smaller, running side by side. Amazingly dumb. It would have been much better to run the plywood sideways so there is no "seam" running the same direction as the direction of travel.

DSCN2388
Looking in other direction, clear that main sheet of plywood coming up

In the first picture in this blog post, another problem is clear, if you think about it. Cyclists are mostly are not used to riding on ramps like this and it isn't that wide - so they pretty much want to be in the middle (notwithstanding the little yellow striping that suggests this is some sort of miniature divided highway). Because many cyclists are apparently not used to be presented with problems of this sort, they try to cross in both directions at the same time as other cyclists or as pedestrians even though common sense would suggest that it is a bit risky. The County supplied signage warns as you approach in one direction "bump" (???) and "slow" (that's OK, I guess) in the other.

I will send the County a link to this blog post and perhaps they will make it better.

Or not. We'll see. . . . .

Monday, September 3, 2012

Trail Safety Enhancements

CountyImprovement
The newly configured transition from crosswalk to trail

As Mr. Lenin said, one step forward and two steps back. Or did he say two steps forward and one step back? I can't keep that straight.

This is at Walter Reed and Arlington Mill Road in Arlington (Virginia). The Country does occasional maintenance on the trails that sometimes is difficult to understand, although most of this effort seems OK.

Previously there were two steel bollard-type posts that sat in steel sleeves that were in the asphalt - the sleeves stuck out of the asphalt an inch or two and the steel post could be locked to the sleeve.

CountryHazard
The previous hazard - helpfully marked by someone with yellow paint

A while ago one of the steel posts disappeared, leaving the sleeve as a hazard - you wouldn't want to ride your bike over this bit of metal poking out of the asphalt. Eventually someone (from the County? one assumes) came along and painted it yellow like this. It then stayed like this for a month or so.

CountryImprovement2
How long will this piece of plastic last?

Finally the County came along and removed the remaining steel post and both the sleeves and installed this plastic thing. I guess a bicycle is an "authorized vehicle" (ha ha). Typically these plastic bollards (if that is what one calls them) don't stay in place very long, but the mounting thing that would remain if the plastic strip disappears wouldn't be the same kind of hazard for cyclists as the previous steel sleeve - but still, it won't be something you want to run into directly since it could cause a rider to lose control.

Often these developments feel like an evolution of compromises . . .