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"ChangeSpeedLimit": { + "id": { + "osm_way_id": 476409332, + "i1": { + "osm_node_id": 53110503 + }, + "i2": { + "osm_node_id": 53086800 + } + }, + "new": 6.7056, + "old": 11.176 + } } ], "proposal_description": [ diff --git a/docs/lake_wash/proposal.md b/docs/lake_wash/proposal.md index 40d94979de..8dcc5f659a 100644 --- a/docs/lake_wash/proposal.md +++ b/docs/lake_wash/proposal.md @@ -5,7 +5,12 @@ _Draft, updated May 7, 2020 by Dustin Carlino ()_ In April 2020, Seattle Department of Transportation started rolling out [Stay Healthy Streets](https://sdotblog.seattle.gov/2020/04/16/announcing-stay-healthy-streets/), restricting roads to through-traffic to give people walking and biking more -space for social distancing. Selecting the streets requires some planning: +space for social distancing. +[Seattle Neighborhood Greenways](http://seattlegreenways.org/socialdistancingstreets/) +soon proposed extending this to a +[130-mile network](https://drive.google.com/open?id=1HQMnagRf8EbS1nouqCMLl4LZr0QE8VrC&usp=sharing). + +Selecting the streets requires some planning: > These streets were selected to amplify outdoor exercise opportunities for > areas with limited open space options, low car ownership and routes connecting @@ -13,10 +18,6 @@ space for social distancing. Selecting the streets requires some planning: > closures did not impact newly opened food pick up loading zones, parking > around hospitals for service for health care professionals, and bus routes. -[Seattle Neighborhood Greenways](http://seattlegreenways.org/socialdistancingstreets/) -soon proposed extending this to a -[130-mile network](https://drive.google.com/open?id=1HQMnagRf8EbS1nouqCMLl4LZr0QE8VrC&usp=sharing). - I've spent the last two years building [A/B Street](https://abstreet.org), software to explore the impacts of changes like this on different modes of transportation. So, let's try implementing part of the proposed network and see @@ -49,7 +50,7 @@ section of road we edited, we'll only see pedestrians and bikes use this stretch of road. If we want, we can click an individual person and follow along their journey. -TODO: video of demand, watch someone cut through + Something's weird though. There's lots of traffic cutting northbound through the neighborhood, along 29th, Ward, and 28th. We can open up the throughput layer to @@ -60,7 +61,7 @@ but it's also clear that lots of cars are now cutting through 26th Ave E. ### Traffic calming -TODO: show how to change speed limits and make one-ways + Let's say you want to nudge traffic to use 23rd Ave, the nearest north/south arterial, instead. (A/B Street is an unopinionated tool; if you have a different @@ -71,16 +72,9 @@ In reality, the speed limit changes could be implemented through [traffic calming](https://streetsillustrated.seattle.gov/design-standards/trafficcalming/) or cheap, temporary alternatives. -TODO: video of effects - -This is just one example how to mitigate the unintended consequences of closing -Lake Washington Blvd. - -TODO: find impacted trips, watch them detour? - ## Next steps -I'm working to model "local access only" roads in A/B Street. Stay tuned to see -more of the +I'm working to model "local access only" roads in A/B Street, and I'll describe +how to measure the impact on travel times. Stay tuned to see more of the [proposed network](https://drive.google.com/open?id=1HQMnagRf8EbS1nouqCMLl4LZr0QE8VrC&usp=sharing) simulated, and get in touch if you'd like to help out!