The Poseur

I get buzzed by another cyclist on the Minuteman path.

This is a high-definition video. You get the full experience if click on “YouTube” under the image, expand it to full screen and click on the little gear wheel under the image to get 720 or 1080 resolution.

Response to Adam Auster’s comment about Arlington Center

I’m responding to Adam Auster’s comment on my previous post:

On the other hand the route would cross the sidewalk, which can be quite busy, 3 times. (To say nothing of the crosswalk because you already mention it.)

Let’s compare the actual conflicts:

Eastbound traffic, in the town’s plan:

(I also discussed this in my previous message.)

Eastbound cyclists headed from the path mix with sidewalk traffic on the northwest corner of Massachusetts Avenue and Mystic Street. There are 16 different movements on the corner: from each of the five entrances: the path, the two sidewalk directions and the two crosswalk directions to each of the other four. Only two of those movements are unlikely: those between the path and the Mystic Street sidewalk, which both go in nearly the same direction. In addition, this corner is where crowds wait to cross the street. This is a very complicated and confusing situation, where bicyclists, pedestrians and vehicles in the street are concealed by one another.

The eastbound cyclists then cross Massachusetts Avenue on a protected signal phase (though with some risk from illegal right turns from Mystic Street) and are directed to wait in a two-way left-turn area in the middle of the busy intersection until the traffic signal changes. Cyclists are protected by traffic-signal timing as long as they leave the two-way left-turn area promptly, and this is not obvious. The two-way left-turn area is too small to accommodate the likely volume of traffic.

The cyclists are expected to continue from eastwards in the bike lane on the south side of Massachusetts Avenue, which crosses three driveways, and then turn right either at a meandering path before Swan Place, or into Swan Place (It isn’t clear which, from the town’s drawing). From Swan Place, they enter he continuation of the path.

Eastbound bicycle traffic, in my proposal:

Eastbound cyclists turn left to cross across the west-side Mystic Street sidewalk where there are only two conflicting movements: sidewalk traffic in either direction. It isn’t quite clear in the drawing I revised, but I would have cyclists cross on the side of the crosswalk which is away from Massachusetts Avenue.

Eastbound cyclists then cross Mystic Street on the same signal phase as pedestrians. This crossing from west to east is the most troublesome for me, because of the potential for motorists turning right from Mystic Street not to yield to the cyclists. On the other hand, the crossing is signal-protected with a no turn on red sign and/or separate right-turn signal. For this reason and because of the width of the crosswalk and path, a right-turning motorist will be looking for sidewalk and path traffic rather than looking left for Massachusetts Avenue traffic. Most bicyclist left-to-right in crosswalk collisions occur where the motorist is looking left for traffic.

The other likely potential conflict here is with right-turning traffic from Massachusetts Avenue, but here, bicyclists are in full view of the motorists and the bikeway is far enough from the corner that motorists have time to yield.

Eastbound cyclists then cross the sidewalk on the far side of Mystic Street, but again where there are only two movements with which they must negotiate: sidewalk traffic in either direction on Mystic Street.

Bicycle traffic and sidewalk traffic cross over each other in front of Whittemore Park, as shown in the drawing, but again there are only two conflicting movements with which bicyclists must contend. One hardly even counts as a conflicting movement, as the bicyclists are traveling in the same direction as the pedestrians and pass them either on the left or on the right, depending on timing.

Cyclists then cross Massachusetts at the signal-protected crossing to Swan Place. There are no potential conflicts except with bicycle and motor traffic turning left from Swan Place onto Massachusetts Avenue. Cyclists continue on Swan Place, turning left into the continuation of the path. There is a potential conflict with oncoming traffic, as with any left turn on a two-way roadway, but this traffic is very light.

Westbound bicycle traffic, in the town’s plan:

(I also discussed this in my previous post.)

Cyclists turn right from the path onto Swan Place and jog to the right into a bike lane, creating potential confusion for motorists who think the cyclists are turning right onto Massachusetts Avenue. . They then cross at the newly signalized intersection and turn sharply left into a bike lane.
The bike lane is hidden behind vehicles waiting to turn right, until it bears right to be on the right side of the right-turn lane.
Cyclists turning the corner are is in theory protected by a no turn on red signal and separate signal phase, but as noted by several commenters at the public hearing, right turns on red still occur. There is a risk of right-hook collisions and long-vehicle off-tracking crashes.
The bike lane jogs over to the right around the corner, and then cyclists swerve left into a bike lane. Again there is the risk of confusion because the bicyclists appear to be going straight, however, they are on a protected signal phase.
Bicyclists cross in the bike lane or “crossbike” and then must beat their way through the crowd of people waiting on the corner, making one of the 16 possible movements here.

Westbound bicycle traffic, in my proposal:

Cyclists turn right from the path onto Swan Place and continue to Massachusetts Avenue. They then cross at the newly signalized intersection and turn left to continue past Whittemore Park.
The first potential conflict cyclists encounter is with pedestrian traffic on the sidewalk. They are crossing from left to right, so they must yield to oncoming pedestrians and merge either in front of or behind pedestrians traveling in the same direction.
Cyclists then cross the Mystic Street sidewalk, with only two conflicting movements, same as for westbound cyclists.
At Mystic Street, the cyclists cross on a protected signal phase along with pedestrians. There is risk of collision with motorists who turn right, both at the start and end of the crosswalk, but again, these motorists would be turning right on red illegally, and the bikeway is away from the corner, reducing the risks in the same way as described for eastbound cyclists.
Cyclists then cross the Mystic Street sidewalk, where there are two conflicts, and cross the very unlikely conflict with traffic turning sharply left onto the Mystic Street sidewalk from the extension of the path.
Pedestrians are expected to take entirely different routes using the sidewalks. I predict that many cyclists will continue to use the sidewalks.

Further suggestions for Arlington Center

On the evening of November 6, 2013, I attended a public hearing about the Arlington Center project. A representative of the city described the town’s plan. There were some changes and clarifications of what was shown at Town Day, and described before the hearing in Adam Auster’s blog post. (Also see his newer posts since the meeting). For one thing, the right-angle parking on Swan Place is gone. As had been pointed out, drivers in two of the parking places would have had to back out into a crosswalk, and  drivers in any parking space would back out across the path of bicyclists.

I left the meeting as the discussion shifted to parking, but the graphic I saw indicated that the new plan is to find replacement parking spaces one by one around the town center. Adam Auster’s blog post goes into more detail about that. One important clarification was that we got at an idea of the traffic signal plan — which would include a special bicycle signal intended to alleviate the conflict between right-turning motor vehicles and through-traveling bicyclists at the northeast corner of Mass. Ave. and Mystic Street.

Still, many attendees commented, as I did, that right-hook collisions were likely here with a bike lane to the right of a right-turn lane, because motorists frequently turn right on the through arrow.  Many raised objections to the zigzag, pillar-to-post proposed routing for bicyclists (shown in green in the drawing below).

My previous post started by describing how a confident adult cyclist could go through the intersection east to west operating as a driver. I embedded a video illustrating that. But I also said that continuity of the path would be important for young and novice cyclists. Let me now illustrate what I consider to be a promising option. I described it briefly in my previous message, and at the meeting.  I’ve added it to the town’s drawing, below. You may click on the drawing to enlarge it.

Possible bicycle route through Arlington Center

Possible bicycle route through Arlington Center

The red line indicates a route for westbound Rail-Trail traffic and the blue line, eastbound Rail Trail traffic. The dark gray lines represents a barrier and curb extension. Is anyone surprised that I would make this suggestion? Get over it! I’m a confident road cyclist but I also ride the Rail Trail, and I’m also a realist. What I propose is going to work better than the Town’s current proposal, and would be preferred over any on-road route by many if not most Rail Trail  users. On the other hand, what I propose, unlike the Town’s proposal, does not complicate bicyclists’ travel on the road!

Advantages as I see them:

  • My proposal continues the path as a path through Arlington Center, consistent with the expectations of Rail-Trail users.
  • It makes full use of the new signals at Swan Place for two-way bicycle travel, rather than only one-way.
  • If timing of the signals is adjusted appropriately, bicyclists crossing Swan Place on a green light would reach Mystic Street just as the signal changes to allow them to cross, and vice versa.  With an average anticipated bicycle speed of 10 mph and motor vehicle speed of 30 mph, this is probably achievable.
  • My proposal avoids the need for the two-way left-turn waiting area in the middle of an intersection (at the right-angle between the two green bike lane segments at left in the drawing.)
  • It avoids messing with Massachusetts Avenue, and in particular, it avoids the attempt to have a westbound bike lane on Massachusetts Avenue serve conflicting purposes as a through route and route to the Rail Trail.
  • It avoids the need for any special traffic signal phases or timing, or added delay for street traffic beyond that imposed by the traffic signal at Swan Place, which is already in the plans.
  • It avoids the driveway crossings on the south side of Massachusetts Avenue. No driveways cross my proposed route.
  • It takes advantage of the unusually wide sidewalk in this area. Is there a possibility of moving the fence back and making the sidewalk even wider — or placing the path  in Whittemore Park, like the one which is already proposed for Uncle Sam Park?
  • Bicyclists using this route eastbound could turn left and continue on Mass. Ave.
  • This route has bicycle and pedestrian traffic cross each other away from intersections, rather than in the crowds on the corners of an intersection, avoiding confusion and sight obstructions.

Potential problems and concerns:

  • This proposal uses sidewalk space and/or parkland. Arlington is concerned with bicyclists’ using sidewalks — but, primarily, the south sidewalk on Massachusetts Avenue, requiring crossing two legs of the major intersection with Mystic Street/Pleasant Street. Let me suggest that the Town’s current proposed design will do little to reduce sidewalk use, and particularly, westbound. What would reduce sidewalk use is to have a more attractive off-street route — and to remove the path leading to the Massachusetts Avenue south sidewalk from Swan Place.
  • Bicyclists would ride in the crosswalk area across Mystic Street in both directions.  Crossing from right to left in a crosswalk, in particular, has been shown to be hazardous. On the other hand, this is already an established crosswalk, and to be blunt about it, I don’t see any alternative other than a grade separation which would realistically result in less use of crosswalks.
  • Strong signage and markings would be needed to direct eastbound Rail-Trail users to turn left into the crosswalk area  at Mystic Street to continue on the Rail Trail. I suggest a special bicycle signal to indicate clearly that the crossing at Mystic Street is for the Rail Trail.
  • Three or four parking spaces on the north side of Massachusetts Avenue would need to be removed to continue the trail to the signalized intersection at Swan Place. (Whether the six parking spaces and taxi stand on the south side would also still be removed, is a different question. That certainly would free up space for through travel and a median. The Town does appear to have found several replacement parking spaces. Can it find a few more?)

Additional Comments:

What I have shown is only a sketch. If anything like it is to become reality, technical and political issues would have to be resolved.

The town held up the intersection of New Hampshire Avenue, U Street and 16th Street NW in Washington, DC as an example of a treatment using a special bicycle signal. Problem is, I know that intersection well. I have studied it extensively and it does not work. You may read about it here. Bicyclists at that  intersection do not use the two-way left-turn area: they instead ride in the crosswalks, taking the most opportunistic route depending on the signal phase. That is what also happens in Arlington Center, and will continue to happen with the town’s proposed design.

Arlington Center westbound — avoiding the right hook

The Town of Arlington, Massachusetts has proposed changes to the intersection of Massachusetts Avenue with Mystic Street/Pleasant Street (really one street, which changes name at the intersection).

I’ve posted a video of a bicycle ride I took through Arlington Center, here:

The ride is easy, and especially because the left turn for Swan Place can only be made when traffic isn’t approaching from the east on Massachusetts Avenue anyway. So, I simply turned into the through lane and kept going. If the leftmost through lane is the only one open, as in my video, it’s an easy merge into the next lane, because the traffic will only be just starting up at the traffic light, at the same time a bicyclist has to merge.

Why Do They shoot Themselves in the Foot?

Graphic from CommuteOrlando site

Graphic from CommuteOrlando site

So, why do other bicyclists in the video shoot themselves in the foot, threading their way along in the narrow space at the right side of the right turn lane — slow, and complicated — and potentially far worse, risking getting themselves right-hooked on the corner?

Just as a refresher about the right hook, CommuteOrlando in Florida has the page, What Bicyclists Need to know About Trucks, including the graphic at the right.

The advice is clear and simple: don’t overtake into the danger zone next to a truck (or a car, or a bus…). The two drawings below convey the same message. You may have seen them already.

Truck blind spots Right hook riskJust in case you might discount the Orlando advice as Not From Here, the drawings below are copied from pages 100 and 101 of the Massachusetts Driver’s Manual (pages 22 and 23 in the PDF of Chapter 4).

All the people in control of the bicycles in my video are grown-ups. All of them will have had many years of experience in traffic, in motor vehicles. Almost certainly, most of them hold driver’s licenses. So, why should they be intentionally and blatantly doing exactly what the Driver’s Manual warns against? These bicyclists are violating the most fundamental principles of traffic safety, just because they happen to be riding bicycles.

To make a complicated explanation simple, it’s because they have been taught to be afraid of traffic coming from behind them, and to ignore other risks — even where those are serious and the risk of traffic from behind is very small. I’m reminded of a saying by the late, great Dutch traffic engineer Hans Monderman:

Never treat anyone in the public sphere like an idiot. If you treat him like an idiot, he will act like an idiot.

But, that’s another discussion. Let’s move on. To ride as I did and avoid the right hook:

  • Check for traffic, and turn right from the path onto Swan Place.
  • Turn left from the middle of the right lane on Swan place into the closest open lane on Mass. Ave.
  • If necessary, merge right into the rightmost through lane. This is easy because traffic will be waiting at the traffic light ahead, and just starting up as you need to merge.
  • Continue across Mystic Street and either keep going straight on Mass. Ave., or turn right at the far side of the intersection to go to the path.

Arlington Center, Massachusetts

Arlington Center, Massachusetts

The assumptions behind this drawing are clear enough: bicyclists are witless wonders, capable of only following a green, painted path — but on the other hand, capable of following it where it abruptly shifts right and left and goes around sharp corners. Motorists are 100% cooperative and attentive, and also have the superhuman ability to see bicyclists outside the range of their rear-view mirrors. We can forget everything we know about safety at intersections: painting the pavement green solves all problems. We can ignore the traffic law which requires right turns to be made from the right edge of the roadway.

Specifics: Westbound

Now, as to specifics, we start again at Swan Place, at the lower right. Here is what the proposed design would have bicyclists do.

  • Bicyclists turn right onto Swan Place. Motorists backing out of the new, proposed parking spaces on the west side of Swan Place will back out into the path of the bicyclists.
  • There is a shared-lane marking before the intersection. Good enough — bicyclists need to ride in the middle of the narrow lane, that’s the appropriate lane position to prepare a left turn, and that’s easy enough on this lightly-traveled street, BUT then the bike lane  to cross Massachusetts Avenue is at the right side of the intersection! Bicyclists are being instructed to bear right, as if they are going to turn right onto Mass. Ave., and then abruptly swerve left. A bicyclist following this designated route needs to be looking back to the left for motorists approaching on Mass. Ave. and back to the right for motorists turning right from Swan Place. The bicyclist’s having first turned right makes it look to motorists as if he or she intends to turn right onto Mass. Ave., risking motorist mistakes and crashes. Bicyclists should instead simply continue across Mass Ave. in line with the shared lane marking. Then they only have to look left and right for traffic. With the traffic light proposed for the intersection, the way will probably be clear on a green light, though it’s best to look anyway. Or is that too simple, and too safe?
  • Bicyclists are next instructed to continue straight across all the lanes of Mass. Ave, to the bike lane on the other side, and swerve sharply left to where the bike lane continues in the door zone of parked cars. The driver of a parked car checking whether the door would strike a bicyclist must look back at the right moment to see that a bicyclist has turned left and is headed for the door. This is worse because the corner in the bike lane is too sharp for bicyclists to negotiate, and they will cut the corner.
  • Here, the bike lane also is directly behind vehicles waiting in the right turn lane.  This requires motorists preparing to turn right to look in their right-hand rear view mirrors at just the right time, or else miss seeing the bicyclist.
  • Where a right turn lane follows the parking spaces, the bike lane is striped to its right, leading bicyclists into a “coffin corner” where they can collide with motor vehicles, and can be swept under the rear wheels of turning trucks and buses.
  • On the corner,  the bike lane is interrupted. It resumes several feet to the right, around the corner. To reach it, the bicyclist again turns right to go straight. But here, there are separate signal phases for right-turning traffic, through traffic and the crosswalk. Which traffic signal is the bicyclist supposed to obey? A bicyclist turning right on the right-turn signal will immediately be in conflict with right-turning motor traffic if swerving left to cross Mystic Avenue. There is no space to wait before swerving left, so bicyclists will pile up on the corner when bicycle traffic is heavy — or more likely, will ignore the bike lane across Mystic Street and continue straight across, still risking the right hook. Is a bicyclist at the right side of the right turn lane permitted to go straight across on the pedestrian signal? on the through phase? Are motorists allowed to turn right on the through  phase? Who knows?
  • On reaching the far side of Mystic Street, a bicyclist has to take care, passing through the crowd of pedestrians waiting, and walking in multiple directions, but may then turn right and head for the path. On the other hand, a bicyclist continuing on Mass. Ave. has to go around another corner. It is very much simpler, faster and safer, as my video shows, to continue straight through on the road.

Now, granted, some — many — of the bicyclists using the Minuteman are children and novices, who would be more comfortable crossing Mystic Street in the crosswalk. BUT the design doesn’t offer any convenient way to get from the street to the crosswalk, even though the sidewalk becomes much wider as it approaches Mystic Street. There is also no ramp down to the bike lane across Mystic Street — there is only a narrow ramp down to the far side of the crosswalk. At the far side of Mystic Street, there is also only a ramp from the crosswalk, none from the bike lane.

Also: how are bicyclists supposed to turn left from Mass. Ave. onto Pleasant Street? They may legally use the left turn lane, driving their bicycles — but if they follow the bike lanes, they will have all of the problems described above and also have to wait for the traffic signal to change once more.

Specifics: Eastbound

I have some problems with the other direction of travel as well.

  • Bicyclists are expected to make the left turn in two steps, meaning that they will have to wait in a small two-way left-turn area. This is too small to hold more than two or three bicyclists at once. The extra wait produces delay.
  • Parking spaces have been removed from Mass. Ave, which is good — no door zone on this side.
  • After the driveway to the parking lot before Swan Place, there is a path to Swan Place, but the plan gives no indication how bicyclists are supposed to reach the path from Mass. Ave.
  • Bicyclists who turn right from Mass. Ave. to Swan Place (or who turn left from Mass. Ave. westbound) ride directly into the path of cars backing out of the right-angle parking spaces on Swan Place.

Some Alternatives

What would I like to see instead?

  • Bicyclists directed straight across from the shared-lane marking on Swan Place, perhaps with dashed lines leading into the intersection.
  • Timing the new traffic signal at Swan Place to clear the westbound lanes of Mass. Ave. before bicyclists get the green light to turn left from Swan Place.
  • Shared-lane markings in the westbound through lanes leading to the intersection with Mystic Street.
  • Eliminate the three parking spaces which create the door-zone bike lane, so there can be a safe bike lane leading to the wide sidewalk on the north side of Mass. Ave.
  • A ramp leading to the wide sidewalk, with a designated part of the sidewalk’s width for bicyclists. This should cross over to the side of the sidewalk away from the street, so bicyclists aren’t crossing through a crowd of waiting pedestrians on the corner.
  • A wide ramp leading down to the crosswalk/bike lane on Mystic Street.
  • That bike lane should be on the side of the crosswalk away from Mass. Ave., so bicyclists again don’t have to pass through the crowd of pedestrians waiting on the corner.
  • A ramp up from that bike lane on the west side of Mystic Street.
  • A signal-protected diagonal crossing so bicyclists headed eastbound can cross the intersection in one step.
  • Forget about the wandering path from Mass. Ave. to Swan Place, so bicyclists just turn into Swan place to get back to the Minuteman headed east.
  • Or as much as I dislike most so-called “cycle tracks”, I’d even go for a two-way path starting at Swan Place opposite the bikeway portal and continuing to Mystic Street on the south side of Mass. Ave., but only if there were no driveways across it, and in connection with a signal-protected diagonal crossing at Mystic Street.
  • Or instead a two-way path in that wide sidewalk area  on the north side of Mass. Ave. all the way from Swan Place to Mystic Street. This would require two street crossings but would not require an additional signal phase at Mystic Street.
  • Find somewhere else nearby to put the few parking spaces that have been eliminated. There’s got to be a better way somehow. Looking at the satellite view, there’s lot of parking in the area and many spaces are empty.

In the long-run, what is really needed here to maintain the quality of the Minuteman is a grade separation for the path. Yes, that’s expensive. But also in the long run, it would pay off in reduced delay and danger for path users, and for everyone traveling through the intersection.

Also see Adam Auster’s post about this project, which covers political issues, and the project’s history.

And I’ve written elsewhere about right hook fatalities and how to avoid becoming one.