diff --git a/selfdrive/ui/qt/onroad/onroad_home.cc b/selfdrive/ui/qt/onroad/onroad_home.cc
index 14340e75d..defa02190 100644
--- a/selfdrive/ui/qt/onroad/onroad_home.cc
+++ b/selfdrive/ui/qt/onroad/onroad_home.cc
@@ -52,6 +52,8 @@ OnroadWindow::OnroadWindow(QWidget *parent) : QWidget(parent) {
   #ifdef DP
   border_indicator = new BorderIndicator;
   #endif
+  // rick - read full screen param
+  dp_nav_full_screen = Params().getBool("dp_nav_full_screen");
 }
 
 void OnroadWindow::updateState(const UIState &s) {
@@ -104,7 +106,11 @@ void OnroadWindow::createMapWidget() {
   QObject::connect(nvg->map_settings_btn, &MapSettingsButton::clicked, m, &MapPanel::toggleMapSettings);
   nvg->map_settings_btn->setEnabled(true);
 
-  m->setFixedWidth(topWidget(this)->width() / 2 - UI_BORDER_SIZE);
+  if (dp_nav_full_screen) {
+    m->setFixedWidth(topWidget(this)->width());
+  } else {
+    m->setFixedWidth(topWidget(this)->width() / 2 - UI_BORDER_SIZE);
+  }
   split->insertWidget(0, m);
   // hidden by default, made visible when navRoute is published
   m->setVisible(false);
diff --git a/selfdrive/ui/qt/onroad/onroad_home.h b/selfdrive/ui/qt/onroad/onroad_home.h
index eae0a124e..b6a6ac025 100644
--- a/selfdrive/ui/qt/onroad/onroad_home.h
+++ b/selfdrive/ui/qt/onroad/onroad_home.h
@@ -25,6 +25,7 @@ private:
   QHBoxLayout* split;
 
   // dp
+  bool dp_nav_full_screen = false;
   #ifdef DP
   BorderIndicator *border_indicator;
   #endif