Friday, August 16, 2013

Mass State Police need to learn about bicyclists

Dateline: July 30, 2012. Cambridge.

I bicycle across the Harvard (Mass Ave) Bridge towards MIT (westbound). I signal in to the traffic lane to overtake a slower cyclist and to avoid a particularly rough stretch of pavement. Upon stopping for a light at Memorial Drive, the State Trooper tasked with directing traffic walked over.

"You're not supposed to do that," he said.

"Do what?"

"You can't leave the bike lane to pass other vehicles."

"Officer, I am allowed to leave the bike lane if conditions warrant, and this includes when pavement conditions are dangerous, or to overtake another vehicle."

"No, you must stay in the bike lane. You can only leave the bike lane where it is dashed, at intersections like this," he said, pointing to where the bike lane crosses Memorial Drive."

At this point, he asked me if I would like to discuss this further. I was glad to. So he proceeded to write me a citation.

Here is what I was cited for:
85.11B: Pass No Pass Zone
85.11B: Fail to Stay Within Marked Lanes
I asked the officer to explain the citations. He refused. (This may be a violation of MGL 90C.2 which states that "[a] Said police officer shall inform the violator of the violation and shall give a copy of the citation to the violator.") I asked him to please give me his name. He refused, and pulled his reflective vest over his name badge. He then took out his handcuffs and called for backup, asking me if I was being disorderly. Not wanting to further escalate the situation (and, sadly, not having a witness there to video the situation) I asked if I was under arrest and, upon being told that I was not, left.

And filed a complaint with the State Police.

I don't want to dwell on the intimidation by the State Police; that will be dealt with internally. However, I would like to deal with the fact that the Mass State Police apparently do not understand bicycle law. (According to the ticket code and internet, the officer works at SC5, which is the Sturbridge Barracks. So, a) he's probably not going to show up in court in Middlesex and b) he probably doesn't cite a lot of cyclists.) First of all, bicyclists do not have to stay within bike lanes.

First, passing in a no passing zone. This would appear to fall under MGL 89.2. Here is the pertinent text from the law:
If it is not possible to overtake a bicycle or other vehicle at a safe distance in the same lane, the overtaking vehicle shall use all or part of an adjacent lane if it is safe to do so or wait for a safe opportunity to overtake.
It is, therefore, legal to change lanes to pass in the same direction. Additionally, the Massachusetts driver manual states that it is legal to cross solid white lines in a vehicle (see this PDF, page 10). In other words, a white line does not constitute a no passing zone. And none of this is mentioned in the cited section, 85.11B

Second, failure to stay within marked lanes. This falls under MGL 89.4A and 89.4B. It states, amongst other things, that:
Upon all ways the driver of a vehicle shall drive in the lane nearest the right side of the way when such lane is available for travel, except when overtaking another vehicle or when preparing for a left turn.
Since I was overtaking another vehicle, I was subject to this exception (there is a separate exception in 85.11B for dangerous situations, and the poor pavement in the bike lane on the Harvard Bridge would obviously fit within this exception). Additionally, while I did signal my turn, I am not required to do so if I need to keep both hands on the handlebars. The officer said that my left hand was extended to "wave off traffic" which is an interesting interpretation of the law from someone whose job is to enforce it.

Had the officer wanted to charge me with these offenses, he probably should have referenced them based on the actual statute. 85.11B simply refers to these statutes.

But, of course, I wasn't in violation of either.

I expect this case to be dismissed without a hearing; it is likely that whatever magistrate vets the citation will not deem it worth the court's time. If, however, a hearing date is set, I will make sure that it is well publicized. You're all invited.

Update 10/21: I asked a State Trooper today on detail at the Head of the Charles if it was legal to leave a bike lane to pass another cyclist. He said it was perfectly legal.

Update 11/19: A court date has yet to be filed. Apparently it should be within 30 days. If it's much longer, I could probably move to dismiss based on the delay.

Update 2017: I received a court date and asked for the charges to be dismissed. The officer had written that "I had created a situation where there were many cars honking at me." I asked the Trooper there (not the same one) to look at the pictures and I showed where he was standing and where I was cycling and asked "do you think it is reasonable to assume that, in a busy intersection in Boston, it would be possible to ascertain which of several dozen vehicles was honking?" The case was decided in my favor.

I never did hear from the State Police regarding my complaint.

Wednesday, August 14, 2013

Monorail vs Hyperloop

There's a lot of hubbub going on about Elon Musk's, uh, fanciful "hyperloop" idea coming out of California. There's a lot of fawning in the press. There are people who know things writing long missives taking down most every bit of the lack of details in the report.

In any case, I think there's another angle here. Basically, the fact that the Simpsons predicted this 20 years ago. And not only did they predict it, but there are some uncanny parallels. Of course, I refer to the Marge vs. the Monorail which first aired in 1993. Not only is it surprisingly prescient, but hilarious, too, making several best-of lists of Simpsons episodes, and being called "the best sitcom episode ever." (And it was written by the inimitable Conan O'Brien, who would go on to some other fame. You can watch via a sketchy link here.)

Basically, the premise is that serial villain and nuclear power plant owner C. Montgomery Burns is caught illegally disposing of nuclear waste, and pays the town $3 million in fines. The town then has a meeting to decide what to do with it. From here on in, I'll parallel it with the LA-San Francisco transportation corridor:

Simpsons: after several proposals and ideas, Marge leads the outcry to repair the town's main street.
California: after several fits and starts, the state passes bonding for high speed rail.

Simpsons: Huckster Lyle Lanley, after the town has approved the street idea, shows up with a plan for a monorail, leads the town in song, and the Main Street (proven transportation improvements) is replaced with a mock-up model of the monorail.
California: After the state has all but started construction on high speed rail, Elon Musk shows up with a sketch of an idea for a hyperloop, which will be faster, cheaper and better than the high speed rail.

Simpsons: The townsfolk ask Lanley questions with the following exchanges:

I hear those things are awfully loud—It glides as softly as a cloud.
Is there a chance the track could bend?—Not on your life, my Hindu friend.
What about us braindead slobs?—You'll be given cushy jobs!

California: Questions about where the system runs, its technical merits and such are not addressed.

Simpsons: Monorail runs on solar power.
California: Hyperloop runs on … solar power.

Simpsons: Lanley has sold monorails to Brockway, Ogdenville and North Haverbrook
California: Musk hasn't sold a hyperloop to … anyone.

It turns out that Lanley builds shoddy products, and that in the end the monorail winds up running at warp speed (slowing temporarily during a solar eclipse) before again running out of control, only stopping when Homer uses an M attached to a lasso to hook a giant doughnut (eliciting the line "Doughnuts, is there anything they can't do?").

So basically, in both cases, the citizens have a pressing transportation issue and appropriate money to fix it. In both cases, they make a choice based on proven technology only to have it upended by an unproven idea (perhaps more nefarious in the case of the Simpsons). Both systems run on solar power, but at least with the monorail there were proven (and proven bad) systems Marge could visit to disprove its worth. If the case of the hyperloop, if it somehow upends the high speed rail project and succeeds, I'll be glad, if surprised. But I'd more likely expect a monorail.


Friday, August 9, 2013

The next step on the BU Bridge area for bikes

The City of Boston recently made somewhat dramatic improvements to the bicycle facilities along Commonwealth Avenue. The formerly orphaned bike lane has been restriped through the intersection, and the new paint is all bright green. In addition, there are reflectors in the road to the right of the lane which I can attest are very visible from a vehicle at night. It's a good start.

Meanwhile, Brookline has installed contraflow bike lanes on Essex Street to allow cyclists to go from Essex to Ivy to Carlton and allow a low-traffic alternative to get from the BU Bridge to the Longwood area. (And for those of us headed to Coolidge Corner, another block before we take a right.) Going towards the bridge, the town has striped in a bike lane. And, more importantly, they've cut a "bicycle crosswalk" across the BU Bridge loop (Mountfort Street) to allow cyclists to get from the Brookline streets to the BU Bridge without having to cross medians, loop around through the intersection of death, or ride the sidewalk to the light. It also allows cyclists coming from Brookline to skip Commonwealth altogether, a great boon to cyclists who don't want to ride one of Boston's widest and busiest streets. So, what was once a death trap for cyclists—and is still rather cumbersome—is getting better. (The picture at right shows the bike lane in the foreground and the crossover in the background.) There is some background information in this document.

The next step, I think, is to better allow cyclists coming from the west on Commonwealth and headed towards Cambridge, would be a two-stage bike turn box. This is not a new concept—it even exists in Boston—and goes as follows:

  1. An eastbound cyclist on Commonwealth approaches the BU Bridge.
  2. The cyclists, upon a green light, goes through the light, then pulls in to a separate line to the right of the bike lane and turns their bike towards the bridge.
  3. Once the light changes, the cyclist pedals straight across and in to the bike lane on the bridge.
Here's a picture of the current facility, with an idea of a two-stage bike box sketched in, as well as a bike box for cyclists coming from Mountfort:


I would hope this is on Boston Bikes's radar screen (if it's under their jurisdiction and not the state). It would be a great help to more novice cyclists who may not know it's an option. The rest of us already do it.

Thursday, August 1, 2013

One chart shows the change in Longfellow traffic

Boston’s massive reconstruction of the Longfellow Bridge began this month. Over the next three years, traffic will be severely restricted, bicyclists mostly accommodated, and rail traffic mostly maintained across a major link in the transportation system which carries 100,000 transit riders as well as several thousand bicyclists and pedestrians across the Charles River (and some vehicular traffic, too).

In late June, I took a baseline, pre-construction count of morning, inbound traffic across the bridge. With the new traffic configuration in place (an inbound bike lane, a travel lane, a pylon-lined buffer and an outbound bike lane, plus the sidewalk) I decided to take a new snapshot of the bridge traffic. Had traffic declined with fewer lanes available? Are cyclists shying away from the new configuration?

Here’s what I found, summed up in one chart:

Bicycle counts stayed about the same (they actually rose, overall, and the peak hour saw 308 cyclists, an increase 14%). Vehicle counts, however, showed a dramatic drop, declining by 50% from 840 to 400 during the peak hour of use! It’s interesting that this is not due, necessarily, to restricted capacity (the one lane of traffic didn’t back up beyond the midpoint of the bridge at any time when I was counting, although the afternoon is a different story) but perhaps the perception of traffic, and the fact that the single lane reduces traffic speed quite a bit.

No lack of praise should be given to MassDOT for this iteration of the Longfellow traffic pattern. The bicycle facilities are, if anything, improved over the bridge before, especially considering the much lower vehicular traffic speeds and volume. And there is no lack of cyclists—even on one of the quietest weeks for traffic midsummer, there were more bikes than a day with similar weather in June.

A few other tidbits:
  • Bicyclists and Pedestrians accounted for 60% of the traffic on the bridge. Cars transported fewer people than human power. (See diagram below.)
  • Between 8:30 and 8:45, there were actually more bicyclists crossing the bridge than vehicles.
  • Pedestrians of all types outnumber cyclists (although this includes both joggers and “commuters”—as defined by me—in both directions).
  • The flow of “commuting” pedestrians is a mirror image of bicyclists. There are four times as many Boston-bound cyclists as Cambridge-bound, but more than twice as many Cambridge-bound Pedestrians as Boston-bound. (There are fewer joggers, but they exhibit a preference towards running eastbound across the bridge, differing from the other foot traffic.) Overall there are more bicyclists going towards Boston and more pedestrians towards Cambridge.
  • While 24 Hubway shared bikes accounted for only 5% of inbound bicycle trips, the 20 outbound Hubways made up 18% of the Cambridge-bound bicyclists.
  • Only four cyclists used the sidewalk, and only one rode the wrong way in the contraflow lane. (I yelled at him.)
And one more diagram showing bridge use (for the record, one chart, one diagram and one infographic, and one annoying and slightly misleading title):




Thursday, July 25, 2013

Personal data collection: Hubway

Back in 2011, as part of a convoluted New Year's resolution, I started tracking my personal travel daily. Each day, I record how many miles I travel, by what mode, and whether I am traveling for transportation or exercise/pleasure. Why did I start collecting these data? Because I figured that there was the chance that some day it would be useful.

And that day is … today!

I realized recently that I had a pretty good comparative data set between the April to July portion of 2012 and 2013. Not too much in my life changed in that time frame. Most days I woke up, went to work, came home and went for a run. Probably the biggest difference, transportation-wise, was that in 2012 there were no Hubway stations in Cambridge, and in 2013 there were. In addition, since Hubway keeps track of every trip, I can pretty easily see how many trips I take, and how many days I use each mode.

To the spreadsheets!

The question I want to test is, essentially, does the presence of bike sharing cause me to walk and bike more frequently, less frequently or about the same? Also, do I travel more miles, fewer or about the same? A few notes on the data. First, I am using April 6 (my first Hubway ride in 2012) to July 9 (in 2012 I had a bike accident on the 10th and my travel habits changed; Hubway launched in Cambridge at the end of the month, anyway). Second, I collect these data in 0.5 mile increments, and I don't log each and every trip (maybe next year) but it's a pretty good snapshot.

The results? With Hubway available, I ride somewhat more mileage, but bicycle significantly more often. In addition, my transit use has declined (but I generally use transit at peak times, so it takes strain off the system) and I walk about the same amount.

Here are the data in a bit more detail for the 95 days between April 6 and July 9, inclusive:

Foot travel. In 2012 I walked 84 days in the period a total of 190.5 miles. In 2013, the numbers 83/180. (Note that I do not tally very short distances in these data.)

Bicycle travel. In 2012, I biked 66 and, believe it or not, in 2013 I actually biked fewer days, only 64. As for the distance traveled, I biked 466.5 miles in 2012, and 544.5 miles in 2013. So despite riding slightly fewer, I biked nearly 20% more distance. This can be partially explained by my participation in 30 Days of Biking in 2012, when I took many short trips in April.

In addition, in 2013 I began keeping track of my non bike-share cycling trips. I only rode my own bike 14 days during the period, tallying 44 trips on those days. But there were many days where I rode my own bike and a Hubway; I took 29 Hubway trips on days I rode my own bike; on 8 of the days I rode my own bike, I rode a Hubway as well.

Bike share trips. In 2012 I rode Hubway on 39 days, totaling 71 rides, an average of 1.8 Hubway rides per day riding Hubway. In 2013, I rode Hubway on 58 days, but tallied 185 rides, an average of 3.2! So having Hubway nearby means that I ride it more days, and more often on the days I ride.

Transit. In 2012, I took transit almost as frequently as bicycling, 61 days. I frequently rode the Red Line to Charles Circle and rode Hubway from there to my office. In 2013, my transit use dropped by nearly half, to just 31 days, as I could make the commute by Hubway the whole way without having to worry about evening showers or carrying a lock.

We might look for the mode shift here. My walking mode shift has not changed dramatically. My bicycling mode shift hasn't appreciably increased, although the number of total rides likely has. My transit mode shift has decreased, as I shift shorter transit rides to Hubway.

Now, if they ever put a station near my house, I'll get to see how those data would stack up. My hypothesis: I'd never walk anywhere, ever.


Tuesday, July 16, 2013

Longfellow bus-bike illogic

The Longfellow project is set to begin next week—signs have been flashing across the city advertising the multi-year lane closure—and at a meeting last week (documentation here), concerns were aired about traffic, gridlock, and banning bicycles from the roadway when the T is closed and buses traverse the bridge.

Wait, when the T is closed and transit riders are shunted on to a bus shuttle, were going to prohibit cyclists from crossing the bridge? When there are Hubway stations on either end? When buses will be packed with weekend travelers and trip lengths will be 10 or 20 minutes longer than usual? When taking a few people out of the system would reduce crowding and speed up trips for everyone else?

Yup.

MassDOT and the MBTA had been cagey about this, never outright saying that bikes were verboten until very recently, when their language was challenged (what does "emergency bike/bus lane" mean, anyway?) by cycling advocates.

In a recent email to stakeholders, MassHighway administrator Frank DePaola wrote:
There have been recently a few tragic incidents between Busses [sic] and bicyclists one common factor has been tight clearances and the bicyclist on the right hand side of the bus. During a red line bus diversion the frequency of busses [sic] between Kendall and Park Street will be quite high the probability of an incident on the tight quarters of the bridge, especially at the approaches is too high and safety is a big concern.
Let me attempt to rephrase:
There have been multiple crashes where buses have hit cyclists when passing them. If we get rid of the bikes, we won't have to worry about these any more.
Never mind the fact that these bicycle-bus incidents have occurred with buses in normal operation, on roads with other vehicles, many distractions, and with buses pulling in and out of bus stops. The Longfellow, while narrow, won't have any of this. There are no bus stops on the Longfellow. There will be no other cars on the Longfellow at this time. When a bus pulls out of a stop, the driver has to worry about cyclists passing on the right and cars going around on the left, while at the same time worrying about the rider running up and tapping on the door to try to get on the bus. None of this will take place on the Longfellow. Yet the default policy is to ban bikes.

While this is dismaying to the cycling community, it seems to be almost insulting to MBTA drivers. It almost says to them that the T and MassDOT don't have faith in them to successfully pass cyclists—something they do thousands of times per day in heavy traffic—on an otherwise closed roadway. I'm sure that experienced MBTA bus drivers can drive across the Longfellow and pass cyclists at the same time.

A salient issue is the pinch point at the Boston end of the bridge, where the width reduces from 29 feet to 22 feet for a 300 foot stretch. This is of concern, but could be remedied with a simple instruction to bus drivers: do not pass cyclists on this section of bridge. There is no need to erect signage to get this point across; MBTA supervisors could remind drivers of the policy before each shift crossing the bridge. (The narrowness of this portion of the bridge is another reminder that two-way vehicle traffic at any other time should be a total non-starter, especially since bicycle counts have actually increased since the new bridge configuration.)

Yes, this will result in some measurable delay for bus passengers. But these delays, I think, would be minimal. Let's run some (estimated) numbers:
  • The MBTA will have up to 15 buses on the Red Line loop to serve passengers. Assuming the route takes 15 minutes (it will likely take slightly longer) this is an average of 1 bus per minute.
  • Each bus will carry 50 passengers (35-40 passengers plus standees).
  • The 2011 bicycle/pedestrian counts found an average of 30 bikes per hour in each direction crossing the Longfellow midday on weekends. While numbers may have climbed since, some cyclists will choose other routes due to the construction, so this is a fine estimate.
  • Cyclists on this section will average 8 mph going towards Cambridge (uphill) and 16 mph towards Boston (downhill).
So let's run some scenarios. A bus traveling at 20 mph will traverse the 300 foot narrow section in approximately 10 seconds. Thus, an inbound bus which would have to slow behind a cyclist going 16 mph would lose 3 seconds. An outbound bus would have more of a time penalty; following a cyclist for 300 feet through this pinch would take 25 seconds to cover 300 feet, a delay of 15 seconds. 

But how often would there be any conflict between a bus and a cyclists in this section of roadway anyway? It is not like there will be a constant line of buses or a constant stream of cyclists. Let's assume a buffer for both buses and cyclists regarding any bus/bike road conflict of double the actual time needed to traverse the segment. For buses, it would mean that the would occupy these 300 feet of roadway 33% of the time (20 seconds every minute). For inbound cyclists, they would occupy the roadway 22% of the time (26 seconds every two minutes). Outbound cyclists would occupy the roadway 42% of the time (50 seconds every two minutes).

Let's do some math. For inbound traffic, there would be a potential conflict 7.5% of the time. This would delay 4.5 buses per hour an average of 3 seconds each, for a total of 13.5 seconds per hour. Assuming 50 passengers per bus, this would be a total of 675 seconds of delay per hour. (Although this might be even less as buses would slow to cycling speed or lower to navigate the turns at Charles Circle.)

For outbound traffic, there would be a potential conflict 14% of the time. This would delay 8.4 buses per hour for an average of 15 seconds each, for a total delay of 118 seconds per hour. Again, if we assume 50 passengers per bus, this is a total of 5880 seconds of delay per hour. (This too might be less as buses accelerate up the bridge approach at a slower average speed.)

This is a total of 6555 seconds of delay for bus passengers per hour. However, this is actually a pretty small number. If there are 50 passengers per bus in each direction, and one bus crossing the bridge every minute, there will be 6000 passengers per hour. Thus, the total delay per bus passenger by allowing cyclists on the bridge (and having buses not pass them in the narrow section) will be just 1.1 seconds per passenger. Considering that the total delay due to Red Line closures will amount to 10 to 20 minutes, this will just 1/500th to 1/1000th of the total detour. In other words, any delay caused will be negligible.

We can also attempt to quantify the delays for cyclists who would be rerouted around the bridge. There are many fewer cyclists, but the potential detours result in a much longer delay. Requiring cyclists to use the Harvard or Craigie Bridge will add 2 to 4 minutes to a trip from Park Street to Kendall. With 60 cyclists per hour, this would equate to 180 minutes—or 10,800 seconds—per hour, far higher than the total delay for bus passengers.

In addition, there are two temporary signs which, I think, would be perfectly acceptable to the bicycling community and which will help mitigate potential conflicts further: First, on each side of the bridge, there should be a sign reading
BICYCLES KEEP SINGLE FILE
This will remind cyclists that there are buses passing on the bridge. The second sign, approaching the outbound side in Boston, would read:
BICYCLES YIELD TO BUSES
This would mean that if a bicyclist and a bus approached the choke point at the same time, the bus would go ahead, and the bicyclist would then be able to navigate the narrow section before the next bus enters the bridge. This would reduce potential conflicts, as well as reducing the need for buses to pass cyclists in this narrow section.

A better policy than hoisting "no bikes" signs would be to allow bikes, and evaluate any issues which arise. This is the policy they are taking towards Mass General, TD Bank and other institutions which are insisting than closing the road to traffic will result in so much gridlock the people won't be able to get home from sporting events or concerts (seriously) or home from the hospital (a major reason the inbound direction was selected to be kept open was to allow emergency access to MGH). If we are going to make concessions to these groups, we should do the same for cyclists who will actually help to alleviate congestion during the closure times.

Google Maps has some work to do on route hierarchy

Last week we examined some of the changes—many of which I think are positive—to the Google Maps interface. However, Google Maps has fallen in to an old trap which harms the overall product: they unilaterally classify US Routes as a higher status road type. This leads to maps where some minor roads appear to be highways, while other routes with higher capacities and uses, appear to be smaller roads.

First, a case from west of Boston:



The two red circles on the map above represent the locations of the photos below. Which is which?


It would make sense for the highway on the left would be shown with a higher symbol level than the city street on the right. This, however is not the case. The image on the left (both from Streetview) is of Massachusetts Route 9 in Newton, showing a typical section of this divided highway. The image on the right shows a typical section of US Route 20 in Watertown, a mostly two-lane city street. Note on this map the second-level (lighter orange) roadways. They are few in number, and therefore quite prevalent. Thus, you would think that they are major, not-quite Interstate-level highways. So if you wanted to avoid the Turnpike (I-90) you'd be right in thinking that Route 20 is a viable alternative.

If Google Maps is going to make these changes, they should review the actual functionality of each roadway to properly classify them based on speed and capacity. Simply labeling every US highway as a higher category of roadway is folly.

It's helpful to touch on the history of the US Highway numbering system in discussing the use of US Highways today (there is a good article on Wikipedia). The system was put in to place in the mid-1920s, so it is nearly a century old. Before that point, most roads were named (often as Auto Trails), although many of these names were of routes which were not improved; US Army convoys in 1919 and 1920 averaged only about 30 to 60 miles per day (not per hour; per day). The US Route numbering system was more of a way to codify these names across state lines (as New England had done a few years earlier; which is why many state highways in New England retain their number when crossing state lines) than to build improved highways.

So Route 20 was numbered in 1926, having previously been New England Route 5. Route 9 was originally the Boston-Worcester Turnpike, and was rebuilt in the 1930s when streetcar operations ceased, becoming one of the earliest roads in New England with some grade separation. (It has barely been improved since; it still has steep grades and some traffic lights. Of course, neither has Route 20.)

Thus, Google Maps, in 2013, is basing much of its route hierarchy on a numbering system put in to place nearly a century ago. Not only does this make little sense, but it harms the usability of its mapping interface.