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About Better Bike

Mark Elliot headshotMark Elliot is a Beverly Hills resident and cyclist who created Better Bike in early 2010 to spark a conversation about road safety and how to make city streets welcoming to those who choose to ride a bicycle. Educated as a city planner, Mark he knows that Beverly Hills must change our policies in order to reflect our plans’ noble language about encouraging non-motor mobility. We talk the talk but don’t walk the walk. After a couple of near-misses on our streets underscored the perils of riding in Beverly Hills, Mark made himself a fixture at city meetings to make the change happen. He always wants to hear from riders about their experience on the streets of Beverly Hills.

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Recent Posts

Strava App Data Maps Rides for Planners, Too

strava logoReader Brent Bigler recently forwarded our way a Strava heatmap that shows the frequency of rides through Beverly Hills. Riders use Strava’s mobile app to track rides and training performance. And the data collected by the app in the aggregate is extremely useful to riders and planners alike. Let’s take a closer look at the heatmap and talk with Strava’s data jockey to learn more about what the data mean.

Everybody in Los Angeles, driver, walker and biker alike, has a favorite route to recommend. Riding Mid-City to Santa Monica? Take 3rd street, snake through the Civic Center parking structure, and you’ll pop out on Rexford Dr. near Santa Monica Boulevard. (Eastbounders take the Civic Center Drive turnoff at City Hall and then turn right to reach 3rd). Riding Beverly Hills to Venice? Try Beverwil south to National, then west to Overland and south again to Venice.

But you don’t need to take our word for it with Strava’s app-generated data. One look at the heatmap (filtered for bike data) shows that many riders take these recommended routes.

Strava Beverly Hills heatmap

Of course the most popular routes are through streets like Santa Monica, Wilshire, Olympic boulevards and Burton Way. But secondary streets get a lot of use too, and using Strava data could be a transformational tool for city transportation officials when identifying safe bike routes as our 1977 Bicycle Master Plan recommends.

Remember that when City Council a year ago approved limited  bike lanes and sharrows under a pilot project, they didn’t heed the advice of riders, who identified Beverly Drive, Santa Monica Boulevard, and Wilshire alternatives Charleville Drive and Gregory Way as the best routes for bike-friendly treatments. We also suggested that Elevado (rather than the staff-recommended Carmelita) offers good crosstown connectivity. These recommendations are supported by the Strava data.

Backbone missing piece map

Beverly Hills is the missing link in our regional bike route network.

Not to mention the need for class II bicycle lanes on Santa Monica Boulevard. That was a proposal upon which a Council majority has frowned. Yet our Beverly Hills segment of this regional corridor begs for officials to close the gap in the Westside’s ‘backbone’ bikeway network.

More About the Heatmap

The Strava system uses a mobile app to track runners and riders via global positioning system (GPS) satellites. The GPS  “pulses” triangulate rider location (each pinpoints a user in space and time) and that data is then collected by Strava and aggregated to map the individual rider’s route as well as route popularity more generally. Strava at HQ maps the data points and out pops a heatmap of ride frequency.

Of course it’s not quite that simple. We asked Strava’s GIS lead, Brian Riordan, how the heatmap is generated. The data for the heatmap is displayed dynamically on demand. So that each time the map is resized, the ride data is redrawn and “re-normalized” at the scale of the regenerated map. Instead of merely moving the same data around in the browser, it is re-plotted to show subtleties in the relative popularity of displayed routes.

Strava map redraws according to zoomWe can see this from the screen capture at right (cropped to show only Beverly Hills). We begin with a broader view including West Los Angeles. When we zoom into BH, changing scale, differences emerge in the relative popularity of the secondary routes. We see it in the subtle color changes on these routes.

There are some caveats to the Strava heatmap, however. It’s not a real-time metric; the data is current only through October. And there is little the user can do to dice-and-slice this data: the heatmap only allows limited color tweaking and no capacity exists for the user to fiddle with thresholds to dynamically distinguish more heavily-traveled secondary routes from less-traveled secondary routes. Is the ratio of rides on Santa Monica relative to Carmelita only 2:1, or do SM trips greatly outnumber Carmelita trips by as much as 10:1? We don’t know. Likewise with Elevado and Carmelita: they visually they rank more or less the same, but is one more frequently ridden? A threshold slider might help us dynamically tease out the difference.

More About Strava

More important as a caveat is the data itself. Where is it coming from? Strava is embraced as a training tool or fitness tracker and so naturally appeals to sport-minded riders. We’d like to see the app find a representative user base including commuters and recreational riders too. San Francisco-based Strava is reaching a wider audience, Brian says, given the incorporation of smartphones into exercise regimens. So Strava data will likely be more representative (and more fine grained) going forward. (Check out the Strava engineering blog to see the uses to which the app’s data can be put.)

And what about all that good data? How can we make good use of it to create safe and practical bike routes? Strava offers a ‘Metro’ product to local governments like Beverly Hills and the County of Los Angeles (as well as advocacy organizations):

Using Strava Metro, departments of transportation and city planners, as well as advocacy groups and corporations, can make informed and effective decisions when planning, maintaining, and upgrading cycling and pedestrian corridors….Strava Metro data enables DOTs and advocacy groups to perform detailed analyses and glean insights into cycling and running patterns dissected by time of day, day of week, season and local geography. – Metro website

Needless to say, there is value to digging into the aggregated data especially a regional level where scale gives us a much broader picture of routes taken. Forget route recommendations: Strava essentially crowdsources the best routes!

What Does the Heatmap Say About Beverly Hills?

Looking at the mapped data for Beverly Hills, a few things are immediately apparent:

Santa Monica Boulevard is a regional connector. We knew it was. So why not designate and improve it as such? Today it is a dangerous ride, so dangerous, in fact, that Beverly Hills councilmember Nancy Krasne called riders there “organ donors.” Of course she refused to consider a separate bike lane there, calling it “unsafe.” But we see improving safety on this defacto regional connector a no-brainer.

Crosstown routes rule. Even major crosstown boulevards like Wilshire, Santa Monica and Wilshire see frequent riders despite these corridors being intimidating for all but the more experienced road-warriors. As for secondary routes, several come to the foreground. To the north, Elevado emerges as a favored route. Why not? It connects Sunset to Santa Monica via a handy shortcut through the Hilton property (via Whittier and Merv Griffin Way). To the south, Charleville appears to be a favored alternative to Wilshire (it also connects three schools) while Gregory, wider and less congested than Charleville, is a favored alternative to Olympic.

Beverly Drive is a favorite north-south route. Not only because it’s a commercial spine, but also because it connects to Beverwill and Culver City beyond. Unfortunately, Council refused to consider Beverly Drive for bike-friendly improvements. Surprisingly, Beverly Glen and Coldwater also see riders, but we expect given the grade in the canyons that these are spandex folks.

What’s most remarkable is that none of the most frequently-chosen routes in Beverly Hills at least as displayed by the Strava heatmap have received a single bike-friendly or safety-improving treatment like a lane, sharrow, or signage (except Burton Way). And yet they’re all popular because they take riders where we need to go. Of course that’s why many of them are congested with vehicles too. The difference is that City of Beverly Hills welcomes motorists but not riders despite our own Sustainable City Plan’s emphasis on multimodal mobility.

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