diff --git a/lts/src/lib.rs b/lts/src/lib.rs
index af37404..ee55050 100644
--- a/lts/src/lib.rs
+++ b/lts/src/lib.rs
@@ -2,6 +2,8 @@ mod bike_ottawa;
 mod parse;
 mod speed_limit_only;
 mod tags;
+#[cfg(test)]
+mod tests;
 #[cfg(target_arch = "wasm32")]
 mod wasm;
 
@@ -9,7 +11,7 @@ pub use bike_ottawa::bike_ottawa;
 pub use speed_limit_only::speed_limit_only;
 pub use tags::Tags;
 
-#[derive(PartialEq, PartialOrd)]
+#[derive(Debug, PartialEq, PartialOrd)]
 pub enum LTS {
     NotAllowed,
     LTS1,
diff --git a/lts/src/osm_unit_test_tool.html b/lts/src/osm_unit_test_tool.html
new file mode 100644
index 0000000..25481c1
--- /dev/null
+++ b/lts/src/osm_unit_test_tool.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>OpenStreetMap Unit Test tool</title>
+    <script>
+      async function generate() {
+        document.getElementById("output").value = "";
+
+        let wayID = document.getElementById("wayID").value;
+        let url = `https://api.openstreetmap.org/api/0.6/way/${wayID}.json`;
+        try {
+          let resp = await fetch(url);
+          let json = await resp.json();
+          let tags = json.elements[0].tags;
+
+          // Remove tags likely to not influence the output at all
+          delete tags["name"];
+          let tagsArray = Object.entries(tags)
+            .map(([k, v]) => `"${k}=${v}"`)
+            .join(", ");
+
+          document.getElementById(
+            "output"
+          ).value = `(${wayID}, vec![${tagsArray}], LTS::),`;
+        } catch (err) {
+          document.getElementById("output").value = `Error: ${err}`;
+        }
+      }
+
+      function copy() {
+        navigator.clipboard.writeText(document.getElementById("output").value);
+      }
+    </script>
+  </head>
+  <body>
+    <h1>OpenStreetMap Unit Test tool</h1>
+    <label for="wayID">Enter OpenStreetMap Way ID:</label>
+    <input type="text" id="wayID" />
+    <button onclick="generate()">Generate</button>
+    <br />
+
+    <h2>Output:</h2>
+    <button onclick="copy()">Copy</button>
+    <br />
+    <textarea id="output" rows="10" cols="100" readonly></textarea>
+  </body>
+</html>
diff --git a/lts/src/tests.rs b/lts/src/tests.rs
new file mode 100644
index 0000000..c2d0229
--- /dev/null
+++ b/lts/src/tests.rs
@@ -0,0 +1,24 @@
+use crate::{bike_ottawa, Tags, LTS};
+
+#[test]
+fn test_bike_ottawa() {
+    // Use osm_unit_test_tool.html (open the file in your browser) to help generate
+    for (way_id, input, expected_lts) in vec![(
+        170171587,
+        vec!["bicycle=yes", "foot=yes", "highway=footway"],
+        LTS::LTS1,
+    )] {
+        let mut tags = Tags::new();
+        for kv in input {
+            let parts = kv.split("=").collect::<Vec<_>>();
+            tags.insert(parts[0], parts[1]);
+        }
+        let (actual_lts, _) = bike_ottawa(tags);
+        if actual_lts != expected_lts {
+            panic!(
+                "For http://openstreetmap.org/way/{way_id}, got {:?} but expected {:?}",
+                actual_lts, expected_lts
+            );
+        }
+    }
+}
