diff --git a/convert_osm/Cargo.toml b/convert_osm/Cargo.toml
index 8b15cd1555..a455991dcc 100644
--- a/convert_osm/Cargo.toml
+++ b/convert_osm/Cargo.toml
@@ -17,6 +17,5 @@ ordered-float = "0.5.0"
 osm-xml = "0.5.1"
 map_model = { path = "../map_model" }
 pretty_assertions = "0.5.1"
-shp = "0.1.1"
 sim = { path = "../sim" }
 structopt = "0.2"
diff --git a/convert_osm/src/lib.rs b/convert_osm/src/lib.rs
index 6cfc937dbf..d32e1d15be 100644
--- a/convert_osm/src/lib.rs
+++ b/convert_osm/src/lib.rs
@@ -10,7 +10,6 @@ extern crate kml;
 extern crate map_model;
 extern crate ordered_float;
 extern crate osm_xml;
-extern crate shp;
 // TODO To serialize Neighborhoods. Should probably lift this into the map_model layer instead of
 // have this weird dependency.
 extern crate sim;
@@ -23,7 +22,6 @@ mod osm;
 mod remove_disconnected;
 mod split_ways;
 mod srtm;
-mod traffic_signals;
 
 use dimensioned::si;
 use geom::{GPSBounds, PolyLine, Pt2D};
@@ -46,7 +44,7 @@ pub struct Flags {
     #[structopt(long = "elevation")]
     pub elevation: String,
 
-    /// SHP with traffic signals
+    /// KML with traffic signals
     #[structopt(long = "traffic_signals")]
     pub traffic_signals: String,
 
@@ -105,10 +103,16 @@ pub fn convert(flags: &Flags, timer: &mut abstutil::Timer) -> raw_data::Map {
     }
     group_parcels::group_parcels(&gps_bounds, &mut map.parcels);
 
-    for pt in traffic_signals::extract(&flags.traffic_signals)
+    for shape in kml::load(&flags.traffic_signals, &gps_bounds, timer)
         .expect("loading traffic signals failed")
+        .shapes
         .into_iter()
     {
+        // See https://www.seattle.gov/Documents/Departments/SDOT/GIS/Traffic_Signals_OD.pdf
+        if shape.points.len() > 1 {
+            panic!("Traffic signal has multiple points: {:?}", shape);
+        }
+        let pt = shape.points[0];
         if gps_bounds.contains(pt) {
             let distance = |i: &raw_data::Intersection| pt.gps_dist_meters(i.point);
 
diff --git a/convert_osm/src/traffic_signals.rs b/convert_osm/src/traffic_signals.rs
deleted file mode 100644
index 704dd4c028..0000000000
--- a/convert_osm/src/traffic_signals.rs
+++ /dev/null
@@ -1,45 +0,0 @@
-// Copyright 2018 Google LLC, licensed under http://www.apache.org/licenses/LICENSE-2.0
-
-use geom::LonLat;
-use shp;
-use std;
-use std::io::Error;
-
-// Returns the location of traffic signals
-pub fn extract(path: &str) -> Result<Vec<LonLat>, Error> {
-    println!("Opening {}", path);
-
-    let reader = shp::ShpReader::open(path)?;
-    let file = reader.read();
-    let mut result: Vec<LonLat> = Vec::new();
-    for r in &file.records {
-        if let shp::ShpRecordContent::MultiPoint(ref raw_shape) = r.content {
-            // The shp crate doesn't expose the struct fields as public. Send a PR later, do this
-            // workaround for now.
-            let shape = unsafe {
-                std::mem::transmute::<&shp::MultiPointShape, &MultiPointShape>(raw_shape)
-            };
-            // Some intersections have multiple points, which shows complicated intersections. For
-            // now, don't handle these.
-            result.push(LonLat::new(shape.points[0].x, shape.points[0].y));
-        } else {
-            println!("Unexpected shp record: {:?}", r.content);
-        }
-    }
-
-    Ok(result)
-}
-
-struct PointShape {
-    x: f64,
-    y: f64,
-}
-
-struct MultiPointShape {
-    _xmin: f64,
-    _xmax: f64,
-    _ymin: f64,
-    _ymax: f64,
-    _num_points: i32,
-    points: Vec<PointShape>,
-}
diff --git a/docs/design/intersections.md b/docs/design/intersections.md
index fe96115176..f0afede022 100644
--- a/docs/design/intersections.md
+++ b/docs/design/intersections.md
@@ -1,5 +1,9 @@
 # Intersection-related design notes
 
+## Nice diagrams
+
+http://streetsillustrated.seattle.gov/design-standards/intersections/pedcrossing/
+
 ## Stop sign editor
 
 Stop signs are FIFO, except that many intersections only have a stop sign for
@@ -30,6 +34,12 @@ visually.
 - could draw an unaligned signal box with 3 circles in the middle of the intersection, but what does it represent? maybe just an initial indicator of what's going on; not full detail.
 - similarly, draw a single stop sign in the middle of other intersections? :P
 
+- http://streetsillustrated.seattle.gov/design-standards/intersections/its/ probably has hints on cycle duration
+- https://ops.fhwa.dot.gov/publications/fhwahop08024/chapter4.htm
+	- ring and barrier diagrams
+- https://www.webpages.uidaho.edu/TrafficSignalSystems/traffic/instructor/ch3a.pdf
+- http://iamtraffic.org/evaluation/the-six-way/
+
 ## Intersection policies for pedestrians ##
 
 Before figuring out how pedestrians will deterministically use intersections alongside cars, recall how cars currently work...
diff --git a/import.sh b/import.sh
index 2d4226a5d7..dd1318150f 100755
--- a/import.sh
+++ b/import.sh
@@ -29,13 +29,11 @@ if [ ! -d data/input/google_transit_2018_18_08/ ]; then
 	rm -f data/input/google_transit_2018_18_08.zip;
 fi
 
-if [ ! -f data/input/TrafficSignals.shp ]; then
+if [ ! -f data/input/traffic_signals.kml ]; then
+	# From https://data.seattle.gov/Transportation/Traffic-Signals/nr6x-wnd5
 	get_if_needed \
-		https://data.seattle.gov/download/dr6d-ejex/application%2Fzip \
-		data/input/TrafficSignals.shp.zip;
-	unzip -d data/input data/input/TrafficSignals.shp.zip;
-	mv data/input/Traffic\ Signals/WGS84/TrafficSignals.shp data/input;
-	rm -rf data/input/Traffic\ Signals data/input/TrafficSignals.shp.zip;
+		http://data-seattlecitygis.opendata.arcgis.com/datasets/ff97a6eb8ac84356beea09138c6e1ec3_0.kml \
+		data/input/traffic_signals.kml;
 fi
 
 if [ ! -f data/input/neighborhoods.geojson ]; then
@@ -91,7 +89,7 @@ for poly in `ls ../data/polygons/`; do
 	cargo run --release -- \
 		--osm=../data/input/$name.osm \
 		--elevation=../data/input/N47W122.hgt \
-		--traffic_signals=../data/input/TrafficSignals.shp \
+		--traffic_signals=../data/input/traffic_signals.kml \
 		--parcels=../data/shapes/parcels \
 		--parking_shapes=../data/shapes/blockface \
 		--gtfs=../data/input/google_transit_2018_18_08 \
diff --git a/kml/src/lib.rs b/kml/src/lib.rs
index 5cb3d4a383..88f6de25f1 100644
--- a/kml/src/lib.rs
+++ b/kml/src/lib.rs
@@ -33,7 +33,7 @@ pub struct ExtraShapes {
     pub shapes: Vec<ExtraShape>,
 }
 
-#[derive(Serialize, Deserialize)]
+#[derive(Debug, Serialize, Deserialize)]
 pub struct ExtraShape {
     pub points: Vec<LonLat>,
     pub attributes: BTreeMap<String, String>,
diff --git a/tests/src/map_conversion.rs b/tests/src/map_conversion.rs
index 2143d0fb89..bd2cb9900b 100644
--- a/tests/src/map_conversion.rs
+++ b/tests/src/map_conversion.rs
@@ -9,7 +9,7 @@ pub fn run(t: &mut TestRunner) {
             let flags = convert_osm::Flags {
                 osm: "../data/input/montlake.osm".to_string(),
                 elevation: "../data/input/N47W122.hgt".to_string(),
-                traffic_signals: "../data/input/TrafficSignals.shp".to_string(),
+                traffic_signals: "../data/input/traffic_signals.kml".to_string(),
                 parcels: "../data/shapes/parcels".to_string(),
                 parking_shapes: "../data/shapes/blockface".to_string(),
                 gtfs: "../data/input/google_transit_2018_18_08".to_string(),