civictechdc · Chellison · Apr 25, 2026
diff --git a/lts/.ipynb_checkpoints/LTS_preprocessing-checkpoint.ipynb b/lts/.ipynb_checkpoints/LTS_preprocessing-checkpoint.ipynb
diff --git a/lts/LTS.xlsx b/lts/LTS.xlsx
diff --git a/lts/LTS_preprocessing.ipynb b/lts/LTS_preprocessing.ipynb
diff --git a/lts/readme.md b/lts/readme.md
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+# Level of Traffic Stress Implementation
+
+This notebook implements the [Level of Traffic Stress](https://peterfurth.sites.northeastern.edu/2014/05/21/criteria-for-level-of-traffic-stress/) model. Specifically, the [2022 edition](https://bpb-us-e1.wpmucdn.com/sites.northeastern.edu/dist/e/618/files/2014/05/LTS-Tables-v2.2.pdf) though there is more background in the [original model](https://peterfurth.sites.northeastern.edu/level-of-traffic-stress/).
+
+In short, this quantifies how stressful or comfortable a road is to bike on.
+* Level 1: Cyclists are not in contact with traffic (except for slow, low volume traffic); comfortable for all level of cycling abilities (including children).
+* Level 2: Cyclists have their own space and intersections are easy to navigate; comfortable for adult cyclists.
+* Level 3: Cyclists interact with some moderate/multi-lane traffic or close to higher-speed traffic; acceptable for 'enthused and confident' cyclists.
+* Level 4: Cyclists interact with or are near high-speed traffic; acceptable for 'strong and fearless' cyclists.
+
+The first step was find correspondence between the descriptions and the available [DC road data](https://opendata.dc.gov/datasets/DCGIS::roadway-block/about).
+
+Then, the LTS descriptions are translated into criteria that can be extracted from the data (see LTS.xlsx)
+
+Lastly, the new per road segment data is added to the postgis database and the function and html files are updated to incorporate the LTS. See 'mvp_map' folder.