diff --git a/config.js b/config.js
index d3d7865..2098f1e 100644
--- a/config.js
+++ b/config.js
@@ -417,8 +417,8 @@ window.CONFIG = {
         spreadKm: 45,             // gaussian sigma around the motorway network
         spreadFloor: 0.30,        // share that far side roads keep
         speed: 1.0,               // flow speed multiplier
-        density: 1.0,             // vehicle density multiplier
-        brightness: 1.3,          // vehicle light intensity
+        density: 0.5,             // vehicle density multiplier
+        brightness: 0.78,         // vehicle light intensity (60 % of 1.3)
         // Time-based traffic profile. Values are multipliers around the
         // configured density. Times are local scene-clock hours.
         timeProfile: {