February 10, 2017
The pictures above could not all refers to the same snow fall day, but every snow day convey the same story: A transit meltdown when the city seems to not spare any energy to clear the bikeway network.
The biais has been noticed by several media outlet, and seems encouraged by some which could have some influence on the city hall culture:
Brent Toderian (@BrentToderian) December 06, 2016
albeit, some city staffs seem to want to make sure no tax dollars are spared toward the well being of cyclists:
But we can always improve our cycling comfort- I'll make the sure my team considers 'snow clearing bike wayfinding'… twitter.com/i/web/status/8…—
Dale Bracewell (@Dale_Bracewell) December 09, 2016
It is possible that local advocates misinterpret how the things are done in Copenhagen, where the bike lanes use to be along the city’s arterials:
The city of Vancouver explains it has 14 “priority” route: in fact, it has 14 route, period: one of them looks like:
Only ~50% of this route cover either a truck route or a frequent transit network route. and the crux of the underwhelming Vancouver snow response lies here: there is virtually no route priotization which leads to high inefficienies in the way snow removal equipment are deployed.
the above map covers the frequent transit network, major truck route, hospital access, and the municipal “Disaster response” routes in the city limits: that represents ~200km of streets: 14 snow plowers can clear this entire network, one lane/direction, in ~1 hour (assuming a ~30km/h snow plow average speed): On friday, February 3rd, the total snow accumulation was ~12cm, falling at a rate of less than ~1cm/hr on average, and still the city let much more than 5cm of snow to accumulate on the main arterials such as Granville where the transit service was halted several time during the day…same on 41st and 49th avenue to speak only of few I have been made aware, not discounting the bus 20 was still not able to make south of 54th on February 8th. A similar transit meltdown occured on Monday 6th, total snow precipitation for the day: 7cm!
another problem could be due to the deployment procedure of the snow plowing equipments: plowing takes place if there is more than 5cm of snow accumulation. The 5cm trigger is the same as in Toronto, however the level of water content in snow tend to be 50% higher on the west coast, so that the same level of snow precipitation leads to significantly more slushy condition in Vancouver than in Toronto …. Also, Toronto deploys snow plowing equipment as soon as 2cm of snow accumulates on its expressway networks.
 this is extrapolated from USA data. for more information on the relative level of water content in snow, see Martin Baxter: Snow to liquid ratio, climatology and forecast methodologies, 2005
August 9, 2016
the debate is framed like it: to be against a blacktop path is to be against accessibility.
Accessibility for all activities or all abilities?
It is no secret that the debate is mainly geared by the Vancouver cycling community, and the main local organization, HUB, has made clear its vision; a cycling highway -where one can “bike from the Fraser River to False Creek in 30mn” (that makes an average speed of 20km/h+) . From there, the conversation regarding accessibility is mainly reduced to wheelchair accessibility concerns, while at the same time accessibility is understood as skate board and roller skate users inclusion.
However, if we understand accessibility as “universal access” for people with impairment of various nature, the conversation take another turn: A trail where a cyclist can zip at 25km/h becomes quickly unfriendly to people with a visual impairment . The accessibility problem is multidimensional and can’t be reduced by how comfortable it is for the small wheels.
A cycling corridor or a greenway Promenade/trail
- Scenic promenades; and
- Experential promenades
The Vancouver Seawall is a great example of scenic promenade: the emphasis and the purpose of the promenade are the views it can offer. The west Richmond dykes falls also in this category. other trails could not offer too much of a view but a more experiential aspect: the Stanley park inner trails fall in this category, as well as the Richmond Shell road trail or the Lynn valley trails (including its suspended bridge).
If the focus of a trail is a viewpoint, one would like then provide the easiest access to it, if the focus of a trail is experiential, then one would like provide the best compromise comfort/experience. That is the trail itself, and noticeably its surface shouldn’t distract of the experience, which sensorial aspect must not be neglected. A universal accessibility trail exists in Stanley park, it is Beaver lake trail :
Similar trails exist elsewhere in the region, Fitzsimmons trail in Whistler, the Panorama trail at the top of the Squamish SeatoSky Gondola or the Spirea nature trail in the Golden Ears park are among them. However some other trails, though not designed universally accessible could in fact be much more wheelchair friendly that the Stanley park’s Beaver trail (which has not keep up with the up to date standards): it is at least the case of most of the Burnaby Central park trails:
The wide and flat enough trails of the Burnaby central park offer good rolling condition, and stay in good condition during raining periods as illustrated in this Google view.
The Stanley park trails accessibility could not be up to the current standards:
What about the state of the art?
In BC, the very recently opened Great West Life trail in Prince George is pretty much the state of art:
A hard packed surface, soft enough for the knees of the elder, and still presenting good rolling capability, as well as other surface treatments, such has woodboards, provide a rich experience . It features wheel-guard where required and slope not greater than 3%. Such a trail design is the result of a cooperation with the Spinal Cord Injury-BC society.
Trail head accessibility?
It is another aspect where the Burnaby central park is hard to beat: it is directly serviced by the Skytrain (Patterson station) as well as 2 frequent transit bus routes (19 and 49). Something Stanley park can’t compete with.
What about the bikes on an universally accessible trail?
The state of the art doesn’t seem to have found a compromise much better than this:
The banning of bike from Universal accessible trail, seems to be common  for reasons previously touched. Cycling is in theory also not allowed on the “universal accessiblity” trails of Stanley park , but the rule is not well respected.
A preliminary conclusion
Our region is surrounded by trails often offering first class experience, but when time comes to find an accessible trail, the region becomes a laggard. When it is time to find an “universally accessible trail” reachable by public transit: pretty much nothing exists.
it is where the Arbutus corridor becomes a golden opportunity: it presents many characteristic required for an “universally accessible trail”, first of them, being the gentle grade, second being the experiential aspect- including the sensorial aspect capitalizing on the meandering among community gardens. third it is easily reachable by many frequent transit routes, allowing to experience it in many different ways.
It is also clear that an “universally accessible trail” vision capitalizing on the experiential aspect of a greenway is not compatible with the cycle track vision as exposed by Hub, and a compromise will need to be found.
 Arbutus Greenway Announced, Hub news, March 14, 2016
 Similarly, Accomodating visual impaired people is also the main challenge the designer of shared space has to address
 A reason why a cycle track on the Paris Petite Ceinture (a disused rail corridor) has been dismissed, as we have seen in a previous post
 It is also good at maintaining the motor skills and enhance the mental health, a reason why such surfacing are often preferred.
 It is also the case for the promenade built on the Paris Petite Ceinture, among others.
 The ravine trail is also presented as “universal accessible” by the Vancouver park board, thought it has some questionable access impediment.
May 20, 2016
it has been lot of research carried out on the capacity of roads, transit or pedestrians infrastructures, with results proven empirically. Such don’t really exist for the cycle tracks, but as the success of the London’s “Super cycling highways” shown, it will become a significant matter
NACTO, in a recent publication , estimates the capacity of a 2 way bike lane (3 to 3.50m) at 7,500 bike/hour. This number seems to be derived of the Highway Capcity Manual citing very dusty publications . this post argues that the capacity of a bikeway is more in the 1,500 cyclist/hr/lane (where a lane is 1.20m to 1.5m wide)
A short Litterature review
Most of the papers trying to estimate a bike lane’s throughput tend to rely either on mathematical models, experiments or a blend of both:
The problem of such approaches is they are not (yet) validated by practice (…and in some case, the experiments seem to be more representative of a velodrome typology than an urban bike lane). They also tend to provide a great range of result: One literature study  found a capacity of 1,500-5,000 cyclists per hour and traveling speed around 12-20 km/h. Another literature study  found a capacity of 2,000-10,000 cyclists per hour for a 2.5 m wide cycle track. It is also important to notice that all these numbers concern an uninterrupted bike lane (e.g bike lane with no intersection).
However,  ( as cited by  ) reported that the theoretical and practical capacities of a Chinese bicycle lane are about 2000 bicycles/h/ln and 1280 bicycles/h/ln, respectively… That is also in line with an empirical result presented by  concerning the Denmark:
How much lanes of cyclists fit in 3.5m width bikeway
 tend to answer to it:
If a 1.8 to 2 m wide bikeway fit 2 lanes of cyclists, any additional lane could require a 1.20m additional width (notice that the cyclists could have a tendency to ride in quincunx to increase their available lateral room). That is the reason for the suggested significant increase in capacity as soon as an unidrectional bike lane reach 3m in the graph above. (There is also some reasons to believe that a 4 meters bidirectioanl bike lane is not width enough to enable 2 lanes of cyclists in each direction in a sustainable way: see video below)
Validation of the numbers in practice
Up to recently, it was basically no opportunity to validate a bikelane model capacity in real life. China of course has wide and busy bike lanes, but they has never presented a typology directly applicable to Europe or America, be by their different geometry or by the type of vehicle: many trikes (up to recently), and nowadays those bikelane tend to be overwhelmed by sccoter (electric or not) (- 70% in Hangzhou as measured by . Bikes also tend to move much more slowly). However, with the recent opening of the London cycle highway this things could change:
Sustrans London (@SustransLondon) May 17, 2016
This video represent the cycling traffic on the London’s Blackfriars bridge: The incoming lanes presents the symptom of a bikeway reaching capacity (bike moving slowly, at speed apparently just enough to maintain balance, and the rare occasional take over use the opposite lane)
What is the effective throughput of Black friars Bridge bike lane?
Sure enough, some cycling supporters quickly raised the question while some other provided some numbers. Here are ours
- there are 37 incoming cyclists crossing a a line (represented by the bottom of the video)
- there are 24 outgoing cyclists crossing the same line
that represents an “instant” throughput of 11,000 cyclists/hour on a period of 20s, or ~3,300 cyclists/hour/ln in the busiest direction (or the equivalent of 10,000 cyclists/hour per car width lane).
First issue, Instant throughput ≠ Throughput
Traffic tends to not flow homegeneously (move in wave, aka “stop and go” traffic), and a measure on 20s can’t be directly scaled into a more generalized throughput.  faced with similar issues applied a correction factor based on freeway traffic observation (by comparing maximum observed traffic volumes in 15 minute intervals and maximum volumes in 10 and 20 sec intervals on freeways): this correction factor is estimated to be 0.63
The estimated maximum throughput per lane observed on the Blackfriar Bridge video above become closer to 2000bile/hr/lane. Still a sustantial number (but already significantly less than the number touted by NACTO), a number also in agreement with theorical number exposed by
Second issue, Uninterrupted bike lane throughput ≠ Interrupted bike lane Throughput
The video below better illustrates the later issue:
— Chris Boardman (@Chris_Boardman) May 10, 2016
There are right and left turning cyclists, which fatally indhers the capacity of a bike lane…and there are signal controlled intersections (a necessity as illustrated by the difficulty of the cyclist, waiting at an intersection, to integrate itself in the main bike lane). As for motor traffic, all these tend to halve the real capacity of a typical interrupted urban bike lane vs an hypothetcal uninterrupted one. So that the real capacity we could measure here tend to be more in the ~1,000 to ~1,700 bike/hr/ln (according to if we apply a correcting factor or not). Those numbers are also in line with results from the field carried by  and 
Why all that matters?
Notice the 2 double deckers in one lane, seen in less than 30s: Could we conclude that the transit capacity of this lane is 24,000people/hour?
It matters since wrong numbers could lead to wrong decisions on the allocation of the street space, but also on the “right sizing” of a bike infrastructure.
The matter is of importance, essentially in regard of transit:
There is no question that a bike lane can achieve a very high throughput but does a 3.5 meter bike lane can carry as much as people than a tram or a BRT?
According to NACTO, a bus lane (BRT) can carry 4,000 people (8,000 if train): Those number thought slightly optimistic  are fairly realistic, and can be verified empirically…Here we infer that a bike lane of similar width (3 to 3.5m) can be competitive with a buslane but not a trams transit system, in term of throughput.
Furthermore we have not touched the whole notion of Level of Service: the mentioned capacity for Transit are design capacity, that is capacity allowing the transit system at its design (optimal) speed. Reaching the capacity of the bike lane as measured on the BlackFriars Bridge tend to infers a degradation of the speed for cyclists (at least by queuing at traffic light). We also didn’t touch the bike parking issue
 the third edition of the Highway capacity Manual suggests a capacity range of 1700-2500 bicycle/hr/ln where each lane is 3 to 4 feet. Those numbers are inferred of previous publication (“bikeway planning design and guideline” institute of traffic and transportation engineering University of California at Los Angeles 1972, “Geometric Design” by W. King, C., and Harkens, in Transportation and Traffic Engineering Handbook, Institute of Transportation Engineers, 1972). the 7,500 number touted by the NACTO correspond to the highest range of it considering that a 3.5m wide can feet 3 lanes of bike
 “Experimental feature of bicycle flow and its modeling” Jiang R. Hu M. , Wu Q. and Song W.
 “Operational Analysis of Uninterrupted Bicycle Facilities”, Allen, P., Rouphail, N., Hummer, J. E., and Milazzo, J. S. Transportation Research Record, 1636 29-36, 1998
 “Bicycle Traffic Flow Characteristics: Experimental Re-sults and Comparisons”, Navin, F. P. D. ITE Journal, 64 31-36, 1994
 “Capacity and level of service for urban bicycle path in China”, Feng Li, China MUnicpal Engineering magazine 1995, 71: 11-14
 “Estimating Capacity of Bicycle Path on Urban Roads in Hangzhou, China”, Zhou D., Xu, C. and Wang D. , Transportation Research Board 94th Annual Meeting, 1995.
 Analysis of Bicycle Traffic on One-way Bicycle Tracks of Different Width, Thomas Skallebæk Buch and Poul Greibe, Trafitec,
 Transit Street Design Guide, NACTO 2016
July 21, 2015
Some remarks on the report to be presented to the Standing Committee on Planning, Transportation and Environment , On July 22.
Bus stop and line of sight at Burrard#Pacific
As mentioned in a previous post’s comment, the COV planners indicated some line of sight involved by the Burrard street concave alignment at Pacific were cause of concern for CMBC toward the implementation of a South Bound bus stop on the South West corner of the intersection. The problem is illustrated below:
Hindered lines of sight for bus leaving a stop, due to a concave alignment of the street, exist in multiple locations on the Transit bus network. a short list below:
- University Blvd at UBC
- 41st avenue at Mc Kinnon
- Kingsway at Patterson
- The exit of the Bridgeport bus loop
While the line of sight concern are legitimate, they could have been overblown in the case of Burrard bridge. They can be addressed by external safety mirror, as often seen in Europe. Here there is sufficient room to accommodate an articulated bus at an angle preserving the line of sight for a safe pull-out:
We were admittedly too optimistic to see the City elaborates on the above solution. Instead, The line of sight concerns expressed at the open house, have since been replaced by the concerns on the preservation of a cypress tree which could not have been endangered by a bus bay on the south side.
We tend to see all that as excuses for inaction. Whether not, the restoration of the south bound bus stop on the North West corner of the intersection should have been in order. However, after feedback of the public, the initial proposal to move the South Bound bus stop further north has been given up. Instead, the bus stop will be moved south by half a block (from Burnaby to Drake). It is a step in the right direction, but insufficient: It seems nothing more than paying lip service: Transit accessibility is still much worse than it was in 2009 and before.
Pacifc East West bike connection
Our above proposal integrate them with an island to create a protected bike box, which can be given and advanced signal. the design to be submitted to the council also propose a bike box, but in what seems to be a more clumsy way:
The Suicide prevention barrier
This part was not presented at the open-house, and “popped up” afterward, the reasons why are unclear, since the City is supposed to have engaged with stack-holders ahead of the general public open-houses, where the issue could have been identified. Burrard bridge being such a iconic bridge, its alteration by suicide barriers, which also hinder the view of the bridge span, and affect negatively the user experience, raise some legitimate concerns from heritage groups.
Due to this, the request for more consultation seems reasonable. The city could explore alternative to physical barriers. The Mapo bridge in Seoul, Korea, using technology to detect suicide attempt, and then connect victim with help, could be an option to consider, after having a correct assessment of the experience 
Overall, The Burrard North end project seems to be a bit rushed.
 Many medias, especially in North America, have reported the experience as failure, because the reported “suicide attempt” have increased by a 600% after the introduction of suicide prevention measure. However many observers consider the experience as successful, since the effective number of committed suicide has been reduced by 77% . One can conjecture that distressed people could target Mapo bridge, knowing they get a chance to be recognized as such and get helped. On the Authority side, it also help to locate those distressed people, and provide them with the needed help to prevent suicide in general.
 Burrard Bridge Upgrades and North Intersection Improvements, City Of Vancouver, Lon Laclaire, July 13, 2015
 BC Transit Infrastructure Design Guidelines, Nov 2010.
 here we provide a design maximizing the line of sight. However, the required length of the line of sight could be shorter, allowing to reduce the angle of the bus bay.
June 2, 2015
Beside the removal of the accident prone slip lanes, and the reopening to pedestrians of the East side of the bridge deck; granted by a new bike lane; there is little improvement for the cyclists and pedestrians: Many connectivity options are still forbidden, either by law or by design:
Notice that the design allows to do a left hook turn from Burard Northbound, or Pacific Westbound since the intersection presents a Dutch interesection characteristic on its North side
- Same could be possible on the South side, albeit at the price to add a traffic signal cycle, to allow unimpeded bike/pedestrian East-West movement on the South side of Pacific. (but what are the priority of the city?)
- Alternately, the construction of ramps to allow to use the bridge underpass (lane on the south side of Pacific), could provide a solution if such is possible
Worth also to note that the planters separating the bike lane on Burrard Street would be gone:
- Such planters are insulating the bike path too much of its environment, what create a safety hazard at interesection
That said such a wrong step seems to be taken on Pacific
All in all, due to the non addressing of prohibited turns for active travel mode, the proposal looks more as a missed opportunity to improve connectivity for cyclists and pedestrians than a real improvment: in some sort, the whole exercise seems more guided by the ideological desire to remove a lane of traffic on the Burrrad bridge than anything else.
All that could be not that bad if the proposal was not used as a weapon to attack the city buses once again.
The Transit issue
When the West side bike lane has been built in 2009, the southbound bus stop at Pacific#Burrard has been decommissioned: another bus stop has been implemented at Burnaby#Burrard. Especially due to the steep terrain nature in the vicinity , that has defacto put the south side of Pacific street out of reach of the Burrard buses, hence the Frequent Transit network, while he Burnaby bus stop is widely redundant with the Davie bus stop in term of coverage:
Far to improve this dire situation, it is suggested to make it worse, by relocating the Burnaby bus stop ever farther away: the new Burnaby bus stop could be a mere 30 meter away of the Davie bus stop!
Because the city so far has conceived its bike lane at the expense of Transit. The “legacy” bike lane on most of Burrard looks like below:
An obviously less than ideal pattern, which call for correction: a protected bike lane. That is good, but on the city watch, it is apparently not compatible with a bus stop. Of course it doesn’t need to be…even in Vancouver:
Several ways to address the bike+bus interaction exist, as noticed by Jarret Walker. As him, we prefer a “table” or shared space solutions for the bike lane that alert the cyclist to yield to peds in this situation, as we have seen before:
It looks the city is more leaning toward a floating island concept, which is at least considered for the Burrard#Pacific Northbound bus stop: the important is to see the access to transit to be addressed. What is possible for the North bound bus stops, must certainly be too for the South bound bus stops
In the present case, it looks like the removal of the slip lanes allow for ample room at the south-West intersection to implement a floating island concept with a bus bay (to not impediment traffic) as suggested in the second illustration of this post.
In any case, the lack of connectivity improvement for cyclists and more critically, the absence of consideration for transit, make the city proposal a bad one. On a positive note, those shortcomings are relatively easy to address and we are hopeful to see the proposal modified in a postive direction
 a rule of thumb is to consider that 10 meters elevation change is equivalent, be in time or energy, to 100 meters distance on flat (e.g. the Grouse Grind hike is 2.8km long but with an elevation change of 853meter: that is equivalent to a hike of 11.43km (2.9km+ 10*0.853km) on a flat terrain.
 See also the discussion on Pricetags
November 3, 2014
Some numbers extracted from the Translink GTFS feed  (for the day of Sept 5th, 2014), for the 2km segment between Hasting and Broadway. The current average speed is ~11.5km/h, could be increased to ~15km/h with a bus lane…or reduced to ~9km/h according to the tradeoff done to implement bike paths
- number of #20 runs: 304 (but I counted only 276 between Broadway and Hasting) requiring a minimum of 19 vehicles in revenue service 
- time and speed between Broadway and Hasting :
- ~15,700 annual operating hours meaning $1.57 millions in annual operating cost (at $100/hr, in line with )
|Min time||Average time||Max time|
|Max speed||Average speed||Min speed|
bus lane Impact on Commercial Drive
We are considering the previously presented Commercial Drive proposal as illustrated below
- This bus lane, featuring clearly marked corridors (protected in one direction) and transit priority signal, suggests that average speed typical of BRT or urban LRT could be achieved: that is ~20km/h.
- That said, noticeabily because the stop are closely spaced, an average speed of 15km/h could be more realisticaly and conservatively achieved:
- That is roughly the average speed of the bus 20 outside the Commercial Drive segment.
Annual operating cost
|average speed||Average time||Annual operating cost|
The potential operating cost saving is in the tune of of $300,000 to $600,000/year.
Similar configurations, be on Davie or Robson, suggest a reduction of the average speed to ~9km/h; That could increase the route 20 operating cost by $400,000/year:
- the bus+bike lanes proposal is conductive of $1 Million in operating cost saving versus a proposal favoring street parking over transit.
A bus lane + traffic signal priority, allows an increase in the bus schedule reliability: lay over can be reduced accordingly, increasing the operating saving
Operating cost is only part of the picture:
the slower a bus route is, the more buses are required at same frequency/seat capacity:
The bus requirement is compounded by two conflating issues:
On the route 20, afternoon peak hour traffic cost ~4 buses:
A bus lane, making transit more immune to traffic congestion, allows to reduce drastically the peak hour buses requirement (in our example, the average speed maintained at ~15km/h, vs 9.5km/h currently in peak hour)
Adding a peak hour bus is a very expensive proposition: it means (to preserve spare ratio, and other contingency)
- the Purchase of an additional bus
- Adding storage capacity for this bus (even if in use 20mn a day)
- Adding maintenance cost
- adding a driver on payroll and all ancilliairy cost (training, administration)
According to a conversation with a former Toronto Transit Commission employee, the TTC is costing an additional peak hour bus at $100,000 a year (that is for a 40footer, typically sold a ~$300,000)
It is worth to note that Translink is in very short supply of articulated trolleybus, estimated each at $1M
It is no secret that the faster a transit service is, the more ridership it will attract. That has been again recently verified in Seattle, with a quasi linear relationship:
- an increase of 20% in speed is conductive of a similar increase in the ridership, which de facto increase the bus operator revenue
This coumpounded to lower operating cost makes Transit much more financially sustainable.
When all the effects are combined, it is relatively conservative to estimate that a bike lane, done at the expense of transit on Commerical, could end up to cost more than $1 million/year to Translink, when compared to a solution improving both
…and here we have analyzed only the direct cost for Translink…
 New markings aim to keep drivers out of Battery Street bus lane, Aubrey Cohen, SeattlePi- Tuesday, October 21, 2014.
 That makes the route 20 the 4th most frequent bus route of the network, behind route 99,9 and 41.
 See our reference spreadsheet (which has been updated with the 2014 data) for further detail.
 We use here the hourly operating cost as stated in the 2013 Bus Service Performance Review (see Annex A): it is worth to note that this hourly operating cost doesn’t include neither bus lay over and dead end trips. It doesn’t differentiate artics buses from standard ones too: the $100 mark is a very significant under estimate of the real operating cost of a route. A $180 per customer hour service could be closer to reality as we have seen before.
 It seems that the average speed of the route 20 is decreasing year over year, almost 10% reduction in the last 7 years according to our spreadsheet  (which also depends of the Translink data quality): A probable consequence of the city council inaction on Transit front
February 19, 2014
This article has been mainly written in November 2013, so could need to be read in the context of a still active law suit regarding the construction of a bike path in Hadden park . I have added further information made available in the interim
Is it legal to cycle in Hadden park (block 136-137)?
Like in most of the urban parks, cycling is prohibited in Vancouver parks, except on footpath or promenade specifically designated as a cycle path : Does such exception exist for Hadden park?
The cycle maps provided by different sources from City of Vancouver seem to be confusing:
The signs, along the seaside route, say a total different story again:
The real sanctioned route is apriori:
The Vancouver street and traffic by-law confirms this interpretation 
The lawsuit 
The Nov 2013 Megan Carvell-Davis vs City of Vancouver lawsuit states two important points:
- The City of Vancouver approved an “active transportation corridor” which mandates a bicycle path through Hadden park but requires the approval of the park board to approve the construction of the bicycle path
- The construction of a paved bicycle path through Hadden park is a violation of the term of the Hadden trust.
- This first point insisting on the bike path rational, tend to support the idea that the goal pursued by the construction of the bike path thru Hadden, is not for the enjoyment of the public, what is a first contravention of the Hadden covenant
- The second point claims that the bike path is an alteration to its present state of nature which is not reasonably motivated by neither park preservation, safety or enjoyment of the public
It will be probably an important legal point to demonstrate that either or not, a legally sanctioned bike path already exists or not in the Hadden park land under covenant (block 136 and 137).
It will be also eventually important for the petitioner, to demonstrate that the current use of Ogden avenue constitutes a reasonable, and safe alternative for cyclists to enjoy the current state of nature of the park, making the request for a bike path in the park an unreasonable alteration of it.
There is little question that cycling along Ogden allows cyclists to enjoy the park and the view it has to offer. The arrangement chosen to the under construction bike route along Point Grey road (near Trutch) will support the idea, that Ogden avenue is
- either safe enough for cyclist of all age and ability to cycle,
- or the city can modify Ogden avenue to achieve a desired safety without infringing the Hadden park covenant:
To give more strength to its case the petitioner has provided reference to a peer reviewved scientific paper titled ”Safe Cycling: How Do Risk Perceptions Compare With Observed Risk?”  (affidavit ). A paper, we have already studied here. What is important to retain for the case under trial is that this paper states that a “bike only path” and “residential street designated bike route” exhibit a similar level of objective safety (thought that the perceived risk is measured greater in the later case) as shown in this graph:
The petitioner case proved strong enough to have the City of Vancouver finally renouncing to fight against it on February 17th. That also makes the route alignment, thru the picnic area, in Kitsilano park, meaningless.
Main source is the lawsuit filled by 
 park by laws City of Vancouver, Jan 1st, 2008.
 Seaside Greenway Completion and York Bikeway (Phase 1 of Point Grey-Cornwall Active Transportation Corridor),General Manager of Engineering Services, City of Vancouver, July 16, 2013
 lawsuit filled by Megan Carvell-Davis vs City of Vancouver, on Nov 4th, 2013
 street and traffic by-law no. 2849, City of Vancouver, January 1st, 2014
 Route Infrastructure and the Risk of Injuries to Bicyclists: A Case-Crossover Study, Teschke K, Harris MA, Reynolds CC, Winters M, Babul S, Chipman M, Cusimano MD, Brubacher JR, Hunte G, Friedman SM, Monro M, Shen H, Vernich L, Cripton PA., American Journal of Public Health: December 2012, Vol. 102, No. 12, pp. 2336-2343.