diff --git a/game/src/sandbox/gameplay/actdev.rs b/game/src/sandbox/gameplay/actdev.rs
index 96a6615656..02240abe7c 100644
--- a/game/src/sandbox/gameplay/actdev.rs
+++ b/game/src/sandbox/gameplay/actdev.rs
@@ -13,13 +13,14 @@ use crate::common::jump_to_time_upon_startup;
 use crate::edit::EditMode;
 use crate::info::{OpenTrip, Tab};
 use crate::sandbox::gameplay::{GameplayMode, GameplayState};
-use crate::sandbox::{Actions, SandboxControls, SandboxMode};
+use crate::sandbox::{Actions, SandboxControls, SandboxMode, SpeedSetting};
 
 /// A gameplay mode with specific controls for integration with
 /// https://cyipt.github.io/acton/articles/the-actdev-project.html.
 pub struct Actdev {
     top_center: Panel,
     scenario_name: String,
+    once: bool,
 }
 
 impl Actdev {
@@ -27,6 +28,7 @@ impl Actdev {
         Box::new(Actdev {
             top_center: Panel::empty(ctx),
             scenario_name,
+            once: true,
         })
     }
 }
@@ -39,6 +41,15 @@ impl GameplayState for Actdev {
         controls: &mut SandboxControls,
         actions: &mut Actions,
     ) -> Option<Transition> {
+        if self.once {
+            self.once = false;
+            controls
+                .speed
+                .as_mut()
+                .unwrap()
+                .resume(ctx, app, SpeedSetting::Faster);
+        }
+
         match self.top_center.event(ctx) {
             Outcome::Clicked(x) => match x.as_ref() {
                 "change scenario" => {
@@ -175,11 +186,11 @@ impl GameplayState for Actdev {
                     .build_def(ctx),
                 ctx.style()
                     .btn_plain
-                    .icon_text("system/assets/meters/bike.svg", "Cycling activity")
+                    .icon_text("system/assets/meters/pedestrian.svg", "Walking activity")
                     .build_def(ctx),
                 ctx.style()
                     .btn_plain
-                    .icon_text("system/assets/meters/pedestrian.svg", "Walking activity")
+                    .icon_text("system/assets/meters/bike.svg", "Cycling activity")
                     .build_def(ctx),
             ]),
         ]);
diff --git a/game/src/sandbox/mod.rs b/game/src/sandbox/mod.rs
index bb656467cb..40b8b06a4b 100644
--- a/game/src/sandbox/mod.rs
+++ b/game/src/sandbox/mod.rs
@@ -17,7 +17,7 @@ use widgetry::{
 
 pub use self::gameplay::{spawn_agents_around, GameplayMode, TutorialPointer, TutorialState};
 use self::misc_tools::{RoutePreview, TrafficRecorder};
-pub use self::speed::{SpeedControls, TimePanel};
+pub use self::speed::{SpeedControls, SpeedSetting, TimePanel};
 pub use self::time_warp::TimeWarpScreen;
 use crate::app::{App, Transition};
 use crate::common::{tool_panel, update_url_cam, CommonState, MinimapController};
@@ -608,7 +608,7 @@ impl ContextualActions for Actions {
                     let mode = state.downcast_mut::<SandboxMode>().unwrap();
                     let speed = mode.controls.speed.as_mut().unwrap();
                     assert!(speed.is_paused());
-                    speed.resume_realtime(ctx, app);
+                    speed.resume(ctx, app, SpeedSetting::Realtime);
                 }))
             }
             (_, "unfollow (pause the simulation)") => {
diff --git a/game/src/sandbox/speed.rs b/game/src/sandbox/speed.rs
index 0b3181358e..b891507f5b 100644
--- a/game/src/sandbox/speed.rs
+++ b/game/src/sandbox/speed.rs
@@ -20,14 +20,14 @@ pub struct SpeedControls {
 }
 
 #[derive(Clone, Copy, PartialEq, PartialOrd)]
-enum SpeedSetting {
-    // 1 sim second per real second
+pub enum SpeedSetting {
+    /// 1 sim second per real second
     Realtime,
-    // 5 sim seconds per real second
+    /// 5 sim seconds per real second
     Fast,
-    // 30 sim seconds per real second
+    /// 30 sim seconds per real second
     Faster,
-    // 1 sim hour per real second
+    /// 1 sim hour per real second
     Fastest,
 }
 
@@ -344,10 +344,10 @@ impl SpeedControls {
         }
     }
 
-    pub fn resume_realtime(&mut self, ctx: &mut EventCtx, app: &App) {
-        if self.paused || self.setting != SpeedSetting::Realtime {
+    pub fn resume(&mut self, ctx: &mut EventCtx, app: &App, setting: SpeedSetting) {
+        if self.paused || self.setting != setting {
             self.paused = false;
-            self.setting = SpeedSetting::Realtime;
+            self.setting = setting;
             self.recreate_panel(ctx, app);
         }
     }