Editorial: Protected Bike Lanes and Cycle Safety

This is a SPOKES Dunedin Editorial based on the findings of the study of cyclist injuries and behavior
in Toronto and Vancouver, published in the October, 2012 issue of the American Journal of Public Health,
Route Infrastructure and the Risk of Injuries to Bicyclists: A Case-Crossover Study


The landmark Teschke et. al. study on adult injury risk and urban cycle route infrastructure (see post below) concluded:

  • Bike lanes with vehicle parking, the most prominent design on Dunedin’s busiest cycling byways, are about 7 times riskier than fully separated (buffered) lanes.
  • Quiet streets are good for cycling.
  • Sidewalks and multi-use paths present higher risks then bike only infrastructure.
  • Rider preferences mostly tend to be the safer type of routes.

Common sense? Of course. But little heeded in Dunedin and elsewhere when it comes to implementing most utilitarian cycle routes on major roads over the past few decades.

What we typically have as cycle paths                                                               What it should be…

Is typical urban cycling in NZ really “unsafe”,
or are the places cyclists encouraged to ride unsafe?

While shown to be of substantial overall benefit once health and the environment are taken into account, cycling is still considered by many in the transport field to be a riskier form of movement. This landmark study says that with separate paths it does not have to be that way.

This elevated risk has developed over time (remember bicycles came before cars) not because of an inherent danger in the act of riding a bike, but from having built a system that all too often puts cars and cyclists too close together. By separating vehicle hazards from the cyclist (as we do for pedestrians on footpaths, trains on tracks, and aircraft on runways), both motorists and cyclists gain in safety and peace of mind.

The Canadian study highlights the desire and importance of separated bicycle route infrastructure as a key evidence-based but underutilized cycle injury prevention strategy. As the authors point out, once built, the improved cycling infrastructure is available to most people, it requires little active effort on the part of cyclists, it requires little or no enforcement actions, it does not require repeated behavioural reinforcement, does not have to be very expensive, and it is primary prevention oriented (it works to prevent the crash and injury from occurring); all strong characteristics of a successful injury prevention program.

So can we justify installing new on-road cycling lanes or maintaining existing lanes that are not protected (buffered or separated)? The answer is, with the large risk documented in this study, we cannot. New investments in cycling infrastructure on busy urban streets should be spent on building protected lanes, either on or off-road.

The era of simply painting lanes on busy roads to create pseudo-cycling routes must now draw to a close. The task of retrofitting existing unprotected bike lanes on busy roads to what we now know are much safer designs must be begun, and begun quickly. This does not mean a disadvantage for cars. That discredited meme is merely hype by a tiny minority. Most people simply want more choices within a safer transport system that makes room for everyone.

Cycling as a means of utilitarian transport will take off when people understand you don’t have to be an avid cyclist to safely enjoy the many benefits of riding a bike. This new group of people on bikes will simply be people going to work, school, friends or the market. This important research, combined with other knowledge, tells us this will happen when, and only when, the routes are safe for and appealing to potential users of all ages, gender and abilities.

But the question remains:

Will the planners, engineers and policy makers now starting to implement Dunedin’s planned Cycle Network heed the evidence for what it takes to truly make Dunedin a people and cycle friendly city?


If roads were designed like our cycle lanes…
This entry was posted in Infrastructure, Policy. Bookmark the permalink.

6 Responses to Editorial: Protected Bike Lanes and Cycle Safety

  1. Pingback: Why Protected (Separated) Tracks for the One-ways? | SPOKES Dunedin

  2. Pingback: Separated Cycle Lanes on the Drawing Board in Christchurch! | SPOKES Dunedin

  3. Pingback: Another Tragedy, Another Call for Change | SPOKES Dunedin

  4. Glen K says:

    That picture of the parked car shows it being ~40-50cm out from the kerb face; I suspect partly because the lip at the edge of the seal isn’t smooth onto the kerb dish (which it should be), and partly because the parking lane line doesn’t discourage them from being further in by being marked tighter to the kerb (looks like the parking lane is ~2.1-2.2m from the kerb face). 40-50cm might have made the difference about the need to swerve out from a car door…

  5. Tom Campbell says:

    Very Sad indeed.
    I have often thought about these cycle lanes, I rarely use them these days, I should have brought this up before but the lanes would be better situated on the other side of the road.
    As a driver I am so scared driving my car in both the one ways just because of cyclists coming up on the left from behind when I the car diver wants to turn left into a park, a driveway or at corner.
    I know as a cyclist I have no trouble doing 40kph in those lanes and am alway watching drivers mirrors etc.
    My reason for stating the other side of the road would be better is because simply the cyclists are closer to the moving driver. Further away from the “Parked Driver”, the parked driver has to turn his head left and rear, to merge into the traffic flow, the driver has to move his vehicle to get a better view as a side mirror gives a poor vision of lane changing vehicles etc, the cyclist can see these actions better.
    Where as on the left hand side of the road, (I am guessing here) I would estimate 90% of parked drivers on the left side of the road use the side mirror and a pretty poor glance out the drivers side window for vehicles that might be changing lanes and miss the cyclist in this lane.


  6. Hank Weiss says:

    BREAKING – Alas, too late for the latest Dunedin victim (unidentified as of this writing) of our unsafe cycling infrastructure. Ironically and sadly, one block and 9 days from the above photo and editorial. (http://tinyurl.com/aj6damt).

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