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  • Monthly Science: Burnett Signal Timing

    Monthly Science: Burnett Signal Timing

    The NYS DOT has been improving the pedestrian crossings at the Burnett – Rt 55 intersection. I expect this will be a bullet item in their Complete Streets compliance document, with favorable job reviews for all parties. The situation for bicyclists using the intersection, which provides the only access from Poughkeepsie to the Dutchess Rail Trail, hasn’t changed in the slightest. No signal timing adjustments, no bike-capable sensor loops, no lane markings, no shoulders, no nothing.

    Here’s what NYS DOT’s Complete Streets program looks like from our perspective, with the four-digit frame numbers ticking along at 60 frame/sec.

    We’re waiting on Overocker Rd for Burnett traffic to clear enough to cross three lanes from a cold start:

    Burnett Signal - 2020-09-25 - front 0006
    Burnett Signal – 2020-09-25 – front 0006

    That building over there across Burnett is the NYS DOT Region 8 Headquarters, so we’re not in the hinterlands where nobody ever goes.

    We’re rolling:

    Burnett Signal - 2020-09-25 - front 0258
    Burnett Signal – 2020-09-25 – front 0258

    The Burnett signals just turned green, although the cars haven’t started moving yet, and we’re accelerating out of Overocker:

    Burnett Signal - 2020-09-25 - front 0463
    Burnett Signal – 2020-09-25 – front 0463

    About 1.5 seconds later, the vehicles have started moving and we’re lining up for the left side of the right-hand lane:

    Burnett Signal - 2020-09-25 - front 0752
    Burnett Signal – 2020-09-25 – front 0752

    There’s no traffic behind us, so we can ride a little more to the right than we usually do, in the hopes of triggering the signal’s unmarked sensor loop:

    Burnett Signal - 2020-09-25 - front 1178
    Burnett Signal – 2020-09-25 – front 1178

    We didn’t expect anything different:

    Burnett Signal - 2020-09-25 - front 1333
    Burnett Signal – 2020-09-25 – front 1333

    We’re rolling at about 12 mph and it’s unreasonable to expect us to jam to a stop whenever the signal turns yellow. Oh, did you notice the truck parked in the sidewalk over on the left?

    As usual, 4.3 seconds later, the Burnett signals turn red, so we’re now riding in the “intersection clearing” delay:

    Burnett Signal - 2020-09-25 - front 1593
    Burnett Signal – 2020-09-25 – front 1593

    Two seconds later, the Rt 55 signals turn green:

    Burnett Signal - 2020-09-25 - front 1711
    Burnett Signal – 2020-09-25 – front 1711

    Did you notice all three eastbound lanes of Rt 55 (on our right) were occupied? That means a driver can’t come zipping through without stopping at the green light in their direction.

    One second later, we’re still proceeding through the intersection, clearing the lethally smooth manhole cover by a few inches, and approaching the far side:

    Burnett Signal - 2020-09-25 - front 1771
    Burnett Signal – 2020-09-25 – front 1771

    Here’s what the intersection looks like behind me:

    Burnett Signal - 2020-09-25 - rear 1
    Burnett Signal – 2020-09-25 – rear 1

    Another second goes by and we’re pretty much into the far right lane , with the westbound traffic beginning to move:

    Burnett Signal - 2020-09-25 - front 1831
    Burnett Signal – 2020-09-25 – front 1831

    The pedestrian crossing ladder has fresh new paint. They milled off the old paint while reconstructing the crossing, so the scarred asphalt will deteriorate into potholes after a few freeze-thaw cycles. Not their problem, it seems.

    Although it’s been three seconds since Rt 55 got a green signal, the eastbound drivers remain stunned by our presence:

    Burnett Signal - 2020-09-25 - rear 2
    Burnett Signal – 2020-09-25 – rear 2

    After another second, we’re almost where we need to be:

    Burnett Signal - 2020-09-25 - front 1891
    Burnett Signal – 2020-09-25 – front 1891

    There’s a new concrete sidewalk on the right, with a wheelchair-accessible signal button I can now hit with my elbow when we’re headed in the other direction. It’s worth noting there is no way to reach Overocker by bicycle, other than riding the sidewalk; there’s only one “complete” direction for vehicular cyclists.

    One second later puts us as far to the right as we can get, given all the gravel / debris / deteriorated asphalt along the fog line near the curb:

    Burnett Signal - 2020-09-25 - front 1957
    Burnett Signal – 2020-09-25 – front 1957

    Which is good, because four seconds after the green signal for Rt 55, the pack has overtaken us:

    Burnett Signal - 2020-09-25 - rear 3
    Burnett Signal – 2020-09-25 – rear 3

    If you were the driver of the grayish car in the middle lane, directly behind the black one giving us plenty of room, you might be surprised at the abrupt lane change in front of you. Maybe not, because you had a front-row seat while we went through the intersection.

    Elapsed time from the green signal on Burnett: 25 seconds. My point is that another few seconds of all-red intersection clearing time wouldn’t materially affect anybody’s day and would go a long way toward improving bicycle safety.

    Unlike the pedestrian crossing upgrade, NYS DOT could fix this with zero capital expenditure: one engineer with keys to the control box, a screwdriver or keyboard (depending on the age of the controls), and the ability to do the right thing could fix it before lunch tomorrow.

    But it’s just a typical bike ride on NYS DOT’s Complete Streets, where their planners & designers claim to “promote pedestrian and bicycle travel for all persons.” Maybe that’s true somewhere in NYS DOT’s fantasies, but you’ll find far more evidence from our rides, with plenty of numbers, showing that’s not the case around here.

  • Rt 376 at Red Oaks Mill: Semitrailer Squeeze Play

    Rt 376 at Red Oaks Mill: Semitrailer Squeeze Play

    We’re southbound on NYS Rt 376, approaching the Wappinger Creek bridge at mile marker 1102, avoiding the overgrowth coming through the guide rail:

    Rt 376 SB Marker 1102 - Royal Semi Squeeze - 2020-07-15 - 01
    Rt 376 SB Marker 1102 – Royal Semi Squeeze – 2020-07-15 – 01

    Avoiding the pothole growing across the right wheel track:

    Rt 376 SB Marker 1102 - Royal Semi Squeeze - 2020-07-15 - 02
    Rt 376 SB Marker 1102 – Royal Semi Squeeze – 2020-07-15 – 02

    Normally, I ride to the left of that pothole, down the middle of the lane, so it’s easier to avoid the next section of overgrowth through the guide rail:

    Rt 376 SB Marker 1102 - Royal Semi Squeeze - 2020-07-15 - 03
    Rt 376 SB Marker 1102 – Royal Semi Squeeze – 2020-07-15 – 03

    This time, we’re as far to the right as we can get, because we’re being overtaken by a semitrailer trash hauler:

    Rt 376 SB Marker 1102 - Royal Semi Squeeze - 2020-07-15 - 04
    Rt 376 SB Marker 1102 – Royal Semi Squeeze – 2020-07-15 – 04

    Which is proceeding as far to the left as the driver can possibly squeeze it:

    Rt 376 SB Marker 1102 - Royal Semi Squeeze - 2020-07-15 - 05
    Rt 376 SB Marker 1102 – Royal Semi Squeeze – 2020-07-15 – 05

    Half a lane is more than we sometimes get:

    Rt 376 SB Marker 1102 - Royal Semi Squeeze - 2020-07-15 - 06
    Rt 376 SB Marker 1102 – Royal Semi Squeeze – 2020-07-15 – 06

    Away he goes:

    Rt 376 SB Marker 1102 - Royal Semi Squeeze - 2020-07-15 - 07
    Rt 376 SB Marker 1102 – Royal Semi Squeeze – 2020-07-15 – 07

    We always try to be friendly, because we’re sure to meet again some day:

    Rt 376 SB Marker 1102 - Royal Semi Squeeze - 2020-07-15 - 08
    Rt 376 SB Marker 1102 – Royal Semi Squeeze – 2020-07-15 – 08

    Mary says he waved back, so it’s all good.

    Elapsed time: about twelve seconds.

    For whatever it’s worth, eight years ago, NYS DOT Region 8 South Dutchess Residency did a much better job of clearing the overgrowth along Rt 376:

    Rt 376 SB Marker 1102 - Royal Semi Squeeze - Google StreetView 2012-04
    Rt 376 SB Marker 1102 – Royal Semi Squeeze – Google StreetView 2012-04

    That was then, this is now.

  • Sharing the Road on NYS Bike Route 9: Squeeze Play

    Sharing the Road on NYS Bike Route 9: Squeeze Play

    I’m southbound on Rt 376, a.k.a. NYS Bike Route 9, riding inches to the right of the fog line on the only sliver of navigable asphalt remaining after NYS DOT applied homeopathic scab patches along this section:

    Rt 376 SB Marker 1110 - Near Miss - oncoming bicyclist and wide trailer - 2020-07-07
    Rt 376 SB Marker 1110 – Near Miss – oncoming bicyclist and wide trailer – 2020-07-07

    On the northbound side, another cyclist rides the sliver of pavement between the fog line and the gravel ridge built up from the deteriorating patches, being overtaken by a huge pickup towing a full-width quad-wheel trailer full of lawn maintenance equipment. The driver has eased about as far toward the yellow line as possible to give the cyclist barely enough clearance:

    Rt 376 SB Marker 1110 - Near Miss - oncoming trailer - 2020-07-07
    Rt 376 SB Marker 1110 – Near Miss – oncoming trailer – 2020-07-07

    I am not “taking the lane”, because I’m towing a trailer of groceries and there’s always overtaking traffic coming around the blind curve behind me:

    Rt 376 SB Marker 1110 - Near Miss - horn - 2020-07-07
    Rt 376 SB Marker 1110 – Near Miss – horn – 2020-07-07

    You can’t hear the car’s horn, but it’s right in my ear.

    The white patches beside and behind the trailer are the fog line paint on the original asphalt surface showing through the disintegrating scab patch. Cyclists cannot ride safely on broken pavement with half-inch discontinuities, which is why I’m to the right of the fog line, mostly off the edge of the patch. If I “took the lane” as expected by NYS DOT, I would be riding about two feet into the lane, in line with the car’s right headlight, to avoid the wheel-grabbing longitudinal fissures showing through the scab patch.

    Elapsed time: 10 seconds.

    Just another day of bicycling on NYS Bike Route 9, one of the roads NYS DOT makes “safe and functional for all users.”

  • Traffic Signal Timing: Burnett at Rt 55 Clearance Interval

    Traffic Signal Timing: Burnett at Rt 55 Clearance Interval

    Back in the day, John Forester’s Effective Cycling defined how vehicular bicycling should be done; our now-fragile comb-bound 1980 Third Printing of the 1978 Third Edition still has a place of honor on our bookshelves. I recently discovered his analysis of how traffic signal timing should work online, which says I’ve drawn the wrong conclusions from my observations of the absurdly short green / yellow / red cycle on Burnett Blvd at Rt 55, just in front of NYS DOT’s Region 8 headquarters.

    The phasing sequence that is required by current traffic law is as follows:

    1. Green, which may be very short when only one vehicle is waiting

    2. Yellow, of only sufficient duration to allow a stop from maximum legal speed before entering the intersection

    3. Red (a 4-way red), for sufficient additional time for traffic to clear the intersection before the conflicting green appears.

    Forester: https://johnforester.com/Articles/Facilities/traffsig.htm

    With that in mind, here’s how his analysis stacks up against one of our recent trips through the intersection. The four-digit number in the picture titles gives the time in frames at 60 frame/sec.

    We’re stopped one car length behind a long trailer of paving equipment sporting an Iowa license plate. The driver has stopped with the trailer straddling the lane divider line, so we cannot determine which way he will turn. Because we no longer trust turn signals, despite the trailer’s blinking left signal, we will not pull up beside it in the right lane.

    Frame 0127, T = 0 s, Δt = 0 s: The signal has just turned green:

    Burnett Opposing Green - AS30V - 2020-06-26 - 0127
    Burnett Opposing Green – AS30V – 2020-06-26 – 0127

    Frame 0264, T = 2.28 s, Δt = 2.28 s: The trailer has started moving and Mary is rolling behind it, with her foot just coming off the ground:

    Burnett Opposing Green - AS30V - 2020-06-26 - 0264
    Burnett Opposing Green – AS30V – 2020-06-26 – 0264

    Frame 0721, T = 9.9 s, Δt = 7.6 s: The signal turns yellow, after DOT’s additional five seconds of green; previously, we had five seconds and would have been able to stop. We’re accelerating as hard as we can, but Mary has barely passed the stop line:

    Burnett Opposing Green - AS30V - 2020-06-26 - 0721
    Burnett Opposing Green – AS30V – 2020-06-26 – 0721

    Of course, entering an intersection on a stale yellow is undoubtedly unwise. It is not so unwise for someone traveling fast, because that person may well clear the intersection before the conflicting traffic starts. It is much more unwise for someone traveling slowly, but it is done and it is lawful.

    Forester, ibid.

    We’ve traveled about three car lengths in the seven seconds since the trailer started moving. Our bikes will sometimes trigger the signal if we’ve stopped in exactly the right spot over the unmarked sensor loops, but we have never observed our bikes retriggering the signal to lengthen the green or yellow phases as we ride through the intersection.

    NYS DOT apparently expects us to stop abruptly when the signal goes yellow, wherever we may be with respect to the stop line and regardless of how fast we may be moving. In fact, given what you’re about to see, we’re expected stop on green to ensure we can start from the stop line during the next green signal.

    Frame 0983, T = 14.2 s, Δt = 4.4 s: The signal turns red. The trailer is visible on the left, beyond the median signage, but we haven’t reached the middle of the intersection. I’m lined up with the rightmost lane of westbound Rt 55 and Mary is about in the center lane. The white car on our right is stopped, the black car is slowing to a stop:

    Burnett Opposing Green - AS30V - 2020-06-26 - 0983
    Burnett Opposing Green – AS30V – 2020-06-26 – 0983

    Frame 1101, T = 16.2 s, Δt = 2.0 s: The opposing signal goes green for Rt 55 traffic, while we’ve barely reached the middle of the intersection:

    Burnett Opposing Green - AS30V - 2020-06-26 - 1101
    Burnett Opposing Green – AS30V – 2020-06-26 – 1101

    Frame 1205, T = 18.0 s, Δt = 1.8 s: I’m lined up with the median, Mary’s in the center lane of eastbound Rt 55, putting us squarely in front of drivers who may be unable to see us through the stopped cars. The drivers to our left are, fortunately, waiting, unlike a previous crossing:

    Burnett Opposing Green - AS30V - 2020-06-26 - 1205
    Burnett Opposing Green – AS30V – 2020-06-26 – 1205

    Frame 1440, T = 21.9 s, Δt = 5.7 s: After 22 seconds, we’ve cleared the intersection and are proceeding eastbound on Rt 55:

    Burnett Opposing Green - AS30V - 2020-06-26 - 1440
    Burnett Opposing Green – AS30V – 2020-06-26 – 1440

    Forester observes the all-red phase must be lengthened to allow cyclists to clear the intersection. Right now, two seconds isn’t enough. Ten seconds would suffice for a pair of reasonably fit, albeit aging, cyclists.

    This system fails to provide the required safety in the case of bicycles for three opposite reasons.

    1. Bicycles are small and are harder to see. In particular, the most visually impressive part of the bicycle and rider is low down where it is easily shielded from view by the hoods of motor vehicles. Sometimes the only part of the cyclist that can be seen by drivers waiting at the stop line with other vehicles on their left is the head of the cyclist.

    2. The cyclist crossing a typical intersection is close to the fronts of the line of cars waiting at the stop line on the cyclist’s right. This is not good judgement on the part of the cyclist, but so much emphasis has been put on staying far right that this position is typical.

    3. The cyclist who is traveling slowly, or, more importantly, is starting from a minimum-duration green, is barely into a wide intersection when the conflicting green appears.

    The result is a car-bike collision as one of the vehicles in the lanes nearest the curb starts up, or speeds up, and hits the cyclist who suddenly appears in front of it.

    Forester, ibid.

    I’ve had a DOT engineer tell me, sneeringly, that they don’t design facilities for “professional cyclists”, which commuting to work evidently made me; he was not, however, a “professional driver” even though he used a car for a similar purpose. It’s obvious DOT doesn’t design facilities for “ordinary” cyclists, either, and the evidence suggests they don’t design facilities for cyclists, period, full stop.

    I still want someone from NYS DOT to explain how this “makes our highway systems safe and functional for all users“, perhaps by bicycling with us through the intersection a few times, but I’ve never gotten a response, let alone an answer, to anything I’ve ever sent their way.

  • Traffic Signal Timing: Vassar Rd at Rt 9

    Traffic Signal Timing: Vassar Rd at Rt 9

    Our southbound bicycling routes take us through the intersection where Vassar Rd becomes NY Rt 9D at NY Rt 9. This is a large intersection:

    Rt 9 Vassar Rd SB - distances
    Rt 9 Vassar Rd SB – distances

    It’s worth noting that Rt 9D and Vassar Rd are also NYS Bicycle Rt 9., so bicycle traffic is expected, if not precisely welcomed.

    We’re traveling south on Vassar Rd, stopped in the right-hand lane (in the upper right of the picture). Eventually, the signal turns green:

    Vassar Rd at Rt 9 - Green signal - 2020-06-21
    Vassar Rd at Rt 9 – Green signal – 2020-06-21

    The traffic to our left starts moving, we start pedaling, and ten seconds later the signal turns yellow:

    Vassar Rd at Rt 9 - Yellow signal at 10 sec - 2020-06-21
    Vassar Rd at Rt 9 – Yellow signal at 10 sec – 2020-06-21

    The traffic hasn’t cleared the intersection, either, but they’re moving faster than we are. The first distance marker on the map shows we’ve traveled 85 feet at an average 5.8 mph from a standing start.

    After another five seconds, we’ve traveled 80 more feet (at 11 mph!), almost the far side of the intersection. Which is a good thing, because the signals on Rt 9 have already turned green and vehicles are accelerating toward us.

    There’s no point in reporting this to NYS DOT, because they don’t care and definitely won’t adjust the signal timing just for bicycles.

  • Traffic Signal Timing: Burnett Blvd at Rt 55

    Traffic Signal Timing: Burnett Blvd at Rt 55

    Nothing has changed since NYS DOT added another five seconds to the green phase on Burnett Blvd in front of their Region 8 HQ building to give bicyclists a generous ten seconds to cross six lanes of traffic from a standing start.

    The Subaru WRX next to us will have no trouble clearing the intersection:

    Burnett Blvd at Rt 55 - Green signal - 2020-06-16
    Burnett Blvd at Rt 55 – Green signal – 2020-06-16

    Ten seconds later, he’s far down the road (barely visible under the median signage) and I’m just lining up with the third traffic lane:

    Burnett Blvd at Rt 55 - Yellow signal - 10 sec - 2020-06-16
    Burnett Blvd at Rt 55 – Yellow signal – 10 sec – 2020-06-16

    Four seconds later, traffic on Rt 55 gets a green signal and I’m almost lined up on the far side:

    Burnett Blvd at Rt 55 - Rt 55 Green signal - 2020-06-16
    Burnett Blvd at Rt 55 – Rt 55 Green signal – 2020-06-16

    You’d think with all the emphasis on bicycling these days, NYS DOT would be receptive to change, but … there’s a reason I’m such a bitter, cynical person on that subject.

  • Monthly Image: Rt 376 Overgrowth Clearing

    Monthly Image: Rt 376 Overgrowth Clearing

    NYS DOT cleared the Japanese Knotweed from the shoulder along Rt 376 north of Maloney last year:

    The last image in that gallery is from the end of April; you can see the weeds just starting to grow under the guide rail.

    Japanese Knotweed, being basically a weed on crystal meth, becomes a lush hedge from a standing start in five weeks:

    Knowing how NYS DOT’s Region 8 Dutchess South Residency’s brush trimming has(n’t) worked in previous years, this took us by surprise:

    Rt 376 Marker 1095 - 2020-06-10
    Rt 376 Marker 1095 – 2020-06-10

    Because chopping Japanese Knotweed to the ground doesn’t actually discourage it, we hope they’re scheduled to return every couple of months …