diff --git a/DESCRIPTION b/DESCRIPTION
index 060ad51..610add6 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: speedRT
 Title: Visualize speed from GTFS-RT data
-Version: 0.1.1
+Version: 0.1.1-9000
 Authors@R: 
     c(person(given = "Joey",
            family = "Reid",
diff --git a/NEWS.md b/NEWS.md
index 7c4547f..4faf790 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,6 @@
+# speedRT 0.1.1-9000
+* Add travel time histogram to summary tab
+
 # speedRT 0.1.1
 
 * Added a `NEWS.md` file to track changes to the package.
diff --git a/inst/SpeedApp/helpers.R b/inst/SpeedApp/helpers.R
index b4c5127..9470d80 100644
--- a/inst/SpeedApp/helpers.R
+++ b/inst/SpeedApp/helpers.R
@@ -29,6 +29,18 @@ plotSpeedHistogram <- function(avl, compare) {
 	p + labs(x = "Estimated Speed (m/s)", y = "Count") + theme_bw()
 }
 
+plotTTHistogram <- function(avl, compare) {
+  if (compare == 'None') compare <- NULL
+	tt = avl[is.finite(timestamp), .(tt = diff(range(timestamp))/60), keyby = c('start_date', 'trip_id', 'shape_id', 'trip_desc', compare)]
+	p = ggplot(data = tt, aes(x = tt))
+	p = if (is.null(compare)) {
+	  p + stat_density(color = 'white', position = 'identity', alpha = 0.3)
+	} else {
+	  p + stat_density(aes(fill = eval(as.name(compare))), color = 'white', position = 'identity', alpha = 0.3) + scale_fill_manual('', values = color_scales[[compare]])
+	}
+	  p + labs(x = "Travel time (minutes)", y = "Count") + theme_bw() + facet_grid(rows = vars(shape_id))
+}
+
 ## Plot speed lines ####
 interpolateLatLon <- function(d, id, shapes, crs) {
 	# generate spatial line from shape
diff --git a/inst/SpeedApp/server.R b/inst/SpeedApp/server.R
index d2e9e3e..724ddea 100644
--- a/inst/SpeedApp/server.R
+++ b/inst/SpeedApp/server.R
@@ -247,6 +247,16 @@ shinyServer(function(input, output, session) {
 		avl <- avl[between(Time, input$time[1] * 3600, input$time[2] * 3600) & between(start_date, dr[1], dr[2])][as.data.table(rt_dir), on = c('route_short_name', 'direction_id')]
 		plotSpeedHistogram(avl, input$compare)
 	})
+	
+	## Travel time histogram
+	output$summary_tt <- renderPlot({
+		req(avl <- matched(), input$rt_dir)
+		# filter on inputs: date range, day type, time range
+		dr <- as.integer(strftime(input$dr, '%Y%m%d'))
+		rt_dir <- tstrsplit(input$rt_dir, ' - ', fixed = TRUE, type.convert = TRUE, names = c('route_short_name', 'direction_id'))
+		avl <- avl[between(Time, input$time[1] * 3600, input$time[2] * 3600) & between(start_date, dr[1], dr[2])][as.data.table(rt_dir), on = c('route_short_name', 'direction_id')]
+		plotTTHistogram(avl, input$compare)
+	})
 
 	## Map speeds ####
 	# initialize map
diff --git a/inst/SpeedApp/ui.R b/inst/SpeedApp/ui.R
index a3c1dc5..1545973 100644
--- a/inst/SpeedApp/ui.R
+++ b/inst/SpeedApp/ui.R
@@ -148,13 +148,19 @@ fluidPage(
         ## summary tab ####
         tabItem(
           'tab_summary',
+          fluidRow(
+            box(
+              width = 6, solidHeader = TRUE, status = "primary", title = "Speed Histogram",
+              plotOutput('summary_speed')
+            ),
+            box(
+              width = 6, solidHeader = TRUE, status = "primary", title = "Travel Time",
+              plotOutput('summary_tt')
+            )
+          ), 
           box(
             width = 6, solidHeader = TRUE, status = "primary", title = "Polling Rate",
             plotOutput('summary_polling_hist', height = '200px')
-          ),
-          box(
-            width = 6, solidHeader = TRUE, status = "primary", title = "Speed Histogram",
-            plotOutput('summary_speed')
           )
         ),
         ## speed map tab ####