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Module

Junctions

Every junction in the network, approach by approach.

Guide: Fix a junction that backs up →
app.trafficure.com/junctions
The Junctions module in English: the junction list on the left with one junction open on its seven approaches, the map showing the approaches coloured by delay, and the Insights tab on the right with the AM vs PM chart and today’s alert summary
Junctions: the list on the left, the selected junction on the map with its approaches coloured, and its detail in the panel on the right.

Junctions shows your network junction by junction. Each junction is split into its approaches, the roads that feed into it from each direction, so when it is slow you can see which approach is holding it up, and how it behaves through the day and the week.

The junction list

The list shows every junction, with its name, average speed, number of approaches, number of active alerts if there are any, and average delay.

The junction list: each junction with its name, speed, number of approaches, any alerts and delay; above it the search box, the Delay and All lists, Asc and Desc, and the Manual or Auto source switch
Junctions at a glance: speed, delay, approaches and alerts.

Above the list: the “Search junctions” box, the sort list (delay, speed, number of approaches, alerts or name), the count (the top 10, 20, 50 or 100, or all), the order buttons, and the “Source” switch (“Manual” or “Auto”) that chooses which set of junctions is shown.

Pick a junction in the list or on the map and its approaches open under it, and appear on the map coloured from green to red by delay.

Junction details

The detail panel shows the junction’s name, its number of approaches and active alerts, a “Generate Report” button, and four tabs: “Insights”, “Approaches”, “Disruptions” and “History”.

Insights tab

The default tab. It answers two questions at once.

AM vs PM Speed by Approach: a grouped bar chart that compares each approach’s average speed in the morning peak (8–11 AM) with the evening peak (5–8 PM). The list at the top of the chart switches it to delay or delay %.

Alert Summary — Today: the total number of alerts on the junction today, their total duration, “Approaches Affected” and “Worst Approach”.

The Insights tab: bar chart of each approach’s speed in the AM and PM peaks, and below it Alert Summary — Today with Total Alerts, Total Duration, Approaches Affected and Worst Approach
The Insights tab: morning against evening peak for each approach, and today’s alert summary.

Approaches tab

A list of all the junction’s approaches with the speed, length and delay of each, and under it a heat map of each approach across the hours of the day (30-day average): green where the approach usually flows, yellow to red where it slows down. The list above the heat map chooses the metric shown. Click an approach to open its details.

The Approaches tab: seven approaches with length, delay and speed, and below them the speed heat map by hour of day for the first approach
The Approaches tab: how each approach usually performs, hour by hour.

Disruptions tab

The disruptions recorded across this junction and their split by type (such as floods, lane closures, objects on the road, crashes and construction), with the speed chart shaded where disruptions were active.

The Disruptions tab: recorded disruptions across the junction split by type, and below it the trend analysis with disruptions, with shaded bands
The Disruptions tab: disruptions across the junction.

History tab

A look back over the last 30 days, in two views. Day-of-Week × Time Pattern for each approach: a row per day and a column per time block; a solid red band across the working days means a structural problem, scattered squares mean slowdowns tied to particular times. Weekday vs Weekend — Average Delay: each approach’s average delay on weekdays and at the weekend; if weekdays are much worse, the problem is commuting traffic; if the two are close, it is a permanent bottleneck.

The History tab: heat maps of days of the week by time blocks for each approach, coloured by speed
The History tab: the whole week for each approach.
Grouped bar chart of average delay on weekdays and at the weekend for each of the seven approaches
Weekday against weekend for each approach.

Approach details

Click an approach and the panel switches to its details, with its name, the junction it feeds and a back arrow, and two tabs: “Insights” and “Disruptions”.

Approach Metrics: current speed, delay, delay %, free-flow speed, travel time, and slowdown (the congestion factor).

Approach Metrics: Current Speed, Delay, Delay %, Free Flow, Travel Time and Slowdown
The approach’s live reading in one panel.

Speed Comparison: the current speed against the typical, off-peak and free-flow speeds, to see how far the approach is from its normal state.

Horizontal bars for the approach’s Current, Typical, Off-Peak and Free Flow speeds, with a colour scale for speed
Speed Comparison: current, typical, off-peak and free flow.

Day × Time Slot: the same heat map as in “History”, for this approach alone. Weekday vs Weekend — Avg Delay: this approach’s average delay on weekdays and at the weekend.

Heat map of days of the week by time slots for this approach, coloured by its 30-day average speed
This approach’s weekly pattern.
Two bars for the approach’s average delay on weekdays and at the weekend
Weekday against weekend for this approach.

Common workflows

  1. Find the worst junctions now: sort the list by delay, descending, and read the first rows.
  2. Find where a junction’s problem comes from: open it and look at the AM vs PM chart; the shortest bar is the slowest approach in the harder peak.
  3. Retime the signals: open “Approaches” and read the heat map to see the hours when each approach slows down on a typical day.
  4. Tell a chronic problem from an occasional one: open “History”; solid red bands across the working days are chronic, scattered squares are tied to particular times of the week.
  5. Check whether a change worked: note the approach’s metrics and history before the work, then come back to the same screens after it.

Who it’s for

  • Traffic engineers retiming signals or redesigning junctions.
  • Operations teams separating chronic bottlenecks from one-off incidents.
  • Planners measuring the effect of a junction change before and after.

Related modules

A slow junction usually means a slow road feeding it. Go to Analytics to read the slow approach road by road, to Alerts for what is happening at the junction right now, or to Route Monitoring to follow a route through it over time.

The screen at a glance

Every monitored junction, scored from the roads that lead into it. Hover a number to find it on the screen.

The Junctions screen
  • 1Search junctions
  • 2Sort by delay, speed or name; filter
  • 3A junction and its approaches
  • 4Insights, Approaches, Disruptions and History
  • 5Morning against evening speed, approach by approach
  • 6Generate a junction report

Step by step

Guides that walk you through this module in the live app, one click at a time.

Junctions · 12 steps · 3 min Fix a junction that backs up Find which arm of a junction jams, at which hours, and hand the evidence to the signal team.
Verified in the live app · 29 Sept 2026 Pictures from the live app. Your city will look different.