Using HinderWijzer

This page contains detailed instructions for using HinderWijzer after you have opened the module. See the HinderWijzer overview for the screen layout and the recommended usage flow.

Periods

The Periods panel has two tabs: Reference and Execution.

Reference

Historical periods with which you compare traffic intensity.

Manage periods

Existing reference periods appear in a list with name, edit, and delete buttons
Click Add period to compose a new reference period
You can add a maximum of 4 reference periods
Each saved period later appears as a row in the Daily intensities panel

Compose period (modal)

In the modal you compose the period:

Start and end date: select the date range
Weekdays: choose which weekdays count (Monday through Sunday)
Exclusions: exclude public holidays and/or school holidays (north, middle, south)
Add date range: adds the chosen range to the list on the right
Name: give the period a recognisable name (appears in the intensities table)
Selected date ranges: overview of composed sub-periods; individually removable
Apply: saves the reference period

Note: exclusions can result in no dates remaining. In that case, no data that depends on this period will be shown either.

For more background on weekdays, exclusions, and date ranges, see Periods configuration. HinderWijzer stores reference periods per project within the module itself; these are not the same periods as in project configuration, but the modal works in the same way.

Execution

When the roadworks take place. This period determines the timeline for charts and the disruption impact calculation.

Period (from–to)

From / To: select start and end date via the date picker
Below the fields you see the weekday and the total number of days in the range

Weekly repeated

Number of weeks: enter a positive whole number (for example 6)
Only in this mode is Daily repeated available for workable hours

Link with workable hours

In Period (from–to) mode, the weekdays of workable hours are automatically derived from the start and end date of the execution period. You cannot adjust them manually then.

Workable hours

Workable hours (WIU: work in progress) are the moments when road capacity is reduced due to the works. Outside these hours, the base capacity applies.

Period (from–to)

From day / To day: weekday (Monday through Sunday); with execution from–to automatically linked to start and end date
From time / To time: times in 24-hour format

Example weekend closure: Friday 22:00 to Monday 05:00.

Daily repeated

Only available when the execution period is set to Weekly repeated.

Weekdays: select one or more days via the Monday through Sunday buttons
From / To: daily working hours

Workable hours determine among other things which weekdays in the intensities table are visually highlighted and when the WIU capacity applies in the charts.

Location

Choose a measuring point after you have set periods and workable hours.

Choose measuring point on the map

Click a measuring point on the map
A panel appears at the bottom of the map with measuring point details
Click Select location to confirm the point for the calculation

As long as no location has been confirmed, the map shows the message Click a measuring point.

Measuring point details

In the panel you see among other things:

Location ID: at the top of the panel; identification of the measuring point
Name: below that; name or description of the measuring point
Type: type of measuring location
Classification: road classification
Lanes: number of lanes
Measuring direction: direction of measurement
Capacity: capacity according to source data
Lane details: detail per lane (if available)

The Select location button is disabled if the point is already selected.

Consequences of location selection

Daily intensities are retrieved for this measuring point
Road capacity may be pre-filled again based on lanes and guideline tables
Previous chart selection is reset; select a period again in the intensities table

Daily intensities

After location selection, the Daily intensities panel shows a table with average daily intensities (veh/day) per weekday, per reference period. The values come from NDW data for the selected measuring location.

Using the table

Each row represents one reference period (maximum 4 rows)
Columns are the weekdays Monday through Sunday
Weekdays within workable hours get visual emphasis
After location selection the cells are filled; while loading you see Loading table…
Click a period row to activate that reference for charts and disruption impact
The selected row gets an orange highlight

Road capacity

Set road capacity after you have confirmed a location and selected a reference period in the intensities table. Lanes and capacity can be pre-filled based on the measuring point.

The Road capacity panel contains two scenarios:

Base: normal situation without closure (all lanes available)
WIU: situation during workable hours (fewer lanes or lower capacity)

Fill in manually

Per scenario you enter:

Lanes: number of available lanes (base determines the reference number; WIU is at most equal to base, 0 means full closure)
Capacity: capacity in vehicles per hour (veh/h); WIU capacity is at most equal to the base capacity

Guidelines or profile?

Besides filling in manually, you can adopt capacity via two tools. Both are based on CIA; the difference is in the input:

Guidelines (document icon): choose a suitable table row from standard scenarios (for example typical road section, rush-hour lane, or closure variant). Use this if your situation matches a CIA table format.
Calculate profile (calculator icon): enter the actual cross-section (lane widths, sides, speed, work zone characteristics). Use this if the profile differs or you want to model reductions during work in progress in detail.

You can choose a different method per scenario (Base or WIU).

Chart controls

Below the daily intensities table are separate controls for the charts. You use them to adjust the displayed day pattern and the timeline in the charts.

Day pattern correction

Click the button with the offset icon to adjust the day pattern relative to the chosen reference intensity:

Correction type: percentage (%) or absolute (veh/h)
Value: positive or negative number
Reset: sets the correction back to 0 (visible as long as the value is not 0)

By default the correction is set to No correction. With an active correction, an extra line Corrected day pattern appears in the day pattern chart.

Chart period

To the right of the correction button, only visible for execution Period (from–to) longer than one week (more than seven calendar days). With Weekly repeated these buttons are not available.

First day: only the start day of the execution
Middle period: a representative middle section (week pattern)
Last day: only the end day of the execution

With this you zoom the timeline in the charts in on the relevant part of a longer execution period.

Charts

The charts Day patterns and Delay and queue development are only shown after you have selected a reference period in the intensities table and all required input is complete. Otherwise you see an explanation such as Select a table value to show chart or a specific reason why the chart is not yet available.

Day patterns (24 hours)

Line chart with the traffic intensity pattern over 24 hours (quarter-hour values).

Lines in the chart:

Day pattern (orange, with area): reference intensity over the day
Corrected day pattern (blue): only with active day pattern correction
Normal capacity (veh/h) (grey dashed): base capacity
Closure capacity (veh/h) (red): WIU capacity during workable hours

Delay and queue development

Second chart with the expected disruption over time:

Extra travel time (minutes) (orange, left axis): extra travel time in minutes
Queue length (kilometres) (blue, right axis): queue length in kilometres

Chart interaction

Hover: move over a chart for detailed information in a tooltip
Zoom: use the mouse wheel to zoom in and out
Reset zoom: double-click the chart to reset the zoom

While charts are loading you see Loading charts….

Disruption impact

The Disruption impact panel sits next to road capacity and shows calculated disruption indicators for the chosen location, period, and capacity settings. The KPIs are only filled when all required input is complete and the calculation has finished successfully.

Below the title is the execution period for which the calculation was made (for example Calculated over 6 weeks or Calculated over 1 Jan – 31 Mar).

Indicators

Max delay (minutes): highest extra travel time in the scenario
Tot. delay (veh-h): total lost travel time in vehicle-hours
Affected: number of affected vehicles
Max queue length (kilometres): maximum queue length
Disruption class (0–4): severity of disruption; lower value is more favourable (green), higher value is less favourable (red)
Disruption category (A–E): category according to guideline; A is the least favourable, E the most favourable

Empty values show a dash (-).

Status bar at the bottom

At the bottom of the screen is a fixed status bar with buttons that scroll to the corresponding panel. Each button shows a short summary and a status indicator: ✓ when that step is complete, ! when action is still needed.

From left to right on the screen:

Location — location ID, Map • confirm, or No location

Reference — period name, X periods, or No period

Execution — date range, number of weeks, or Invalid period

Workable hours — time window (for example Mon 00:00 – Sun 00:00)

Road capacity — {number of lanes} • {base capacity}/{WIU capacity} (for example 2 lanes • 4200/2800)

Intensity — selected period name or No intensity

Correction — No correction, percentage (for example +5%), or absolute amount (for example -200 veh/h)

Status (right)

Input needed (○): not everything filled in yet; no recent data update
Loading… (↻): intensities table or charts are being loaded
Update HH:MM: last successful data refresh
Error message (red): for example Loading failed

On smaller screens the status bar is more compact; on mobile you see a shortened summary of the most important steps.

Tips for effective use

Follow the recommended order: see HinderWijzer overview; the status bar helps track what is still open
Set the scenario first: you can fill in periods and workable hours before choosing a location; then follow location, intensity, and road capacity
Use multiple reference periods: compare different historical periods by switching rows in the intensities table
Check workable hours: WIU times determine when the lower capacity applies in the chart
Guidelines or profile: choose CIA tables for standard scenarios; use the profile calculation for differing cross-sections or detailed work zone characteristics
Day pattern correction: only adjust if you expect the traffic pattern to differ from the reference
Chart period for long execution: for a period longer than one week you can use First day, Middle period, or Last day to view detail

Troubleshooting

Adding a reference period does not work

You can add a maximum of 4 reference periods; delete an existing period if needed
Check whether the composed date range still contains days after exclusions

No data in the intensities table

Check that you have added at least one reference period
Check that you have confirmed a location
Wait until Loading table… has completed

Charts show a message instead of data

Select a period row in the intensities table
Check that execution period, workable hours, and road capacity are filled in
Read the displayed message; it indicates which input is still missing

Disruption impact remains empty

Check that all steps in the status bar have a ✓
Wait until the status shows Update HH:MM
With a red error message: refresh the page or check your internet connection