CAM-68
Traffic count by vehicle type
A straight stretch of the road in mid-morning, with traffic in both directions: cars, vans, a bus, two motorbikes and several articulated lorries. Nothing is happening; the road is simply working.
Turn on IRIS Vision
AI-generated image
What IRIS understands
What it recognises in this scene
- car
- van
- motorbike
- bus
- articulated lorry
What this camera gives back
Nobody gets an alert here. Here you get numbers.
- 38.400+3%AADT (vehicles per day)
- 3.180Peak hour flow
- 14%% heavy vehicles
- 31.900Light vehicles
- 1.240Motorbikes
- 360Buses
The figures on this screen are an example from the illustration, not any client's measurement.
The series, not one figure
One number says nothing. A curve does.
Traffic by time slot and direction
- Direction A
- Direction B
| Slot | Direction A | Direction B |
|---|---|---|
| 06 | 980 | 740 |
| 08 | 3180 | 1520 |
| 10 | 1740 | 1380 |
| 12 | 1520 | 1440 |
| 14 | 1610 | 1560 |
| 16 | 1490 | 1680 |
| 18 | 2260 | 3020 |
| 20 | 1580 | 1910 |
| 22 | 720 | 860 |
Split by vehicle type
- Vehicles per day
| Slot | Vehicles per day |
|---|---|
| Cars | 26400 |
| Vans | 5500 |
| Rigid truck | 3100 |
| Articulated | 2300 |
| Buses | 360 |
| Motorbikes | 1240 |
Heavy vehicles by day of the week
- Heavy share of the total
| Slot | Heavy share of the total |
|---|---|
| Mon | 16% |
| Tue | 17% |
| Wed | 17% |
| Thu | 18% |
| Fri | 15% |
| Sat | 7% |
| Sun | 4% |
The figures on this screen are an example from the illustration, not any client's measurement.
How the counting works
Counting is not something you ask for. You draw a line.
There are two lines drawn on the image, one for each direction of travel. Everything that crosses a line is added up, and what type it was is stored too: car, van, bus, motorbike or articulated lorry. Counting by direction is deliberate: mixing the two ways into a single figure makes the data useless for deciding anything. And a line cannot be asked for in words: it has to be drawn onto the frame, and that is why counting is set up by drawing.
- line, direction A · Counting line
- line, direction B · Counting line
What changes
What changes for whoever runs the road
The road's maintenance manager decides with two numbers: how many vehicles go past each day and what share of them are heavy. AADT — the year's total divided by 365 — says how much load the stretch carries, and the percentage of heavy vehicles says when resurfacing will be due, because an articulated lorry punishes the pavement far more than a car. Today that figure comes from a permanent counting station, which is expensive and therefore rare, or from a portable counter left in place for a few days and extrapolated to the rest of the year. The camera already on the pole counts every day, by direction and by vehicle type, and that engineer stops arguing about estimates and starts arguing about the whole series. The figures on this illustration are an example, not anyone's measurement.
What people usually ask
What is AADT and why does it matter so much?
AADT is the Annual Average Daily Traffic: every vehicle that passes along a stretch in a year, divided by 365. It is the standard measure of a road's traffic load and the basis of almost every planning and maintenance decision: how many lanes are needed, when resurfacing is due, which junction has become too small. It is counted by direction, because a road with a heavy flow one way and a light one the other is not managed like a balanced one.
Why does the share of heavy vehicles matter so much?
Because it is not cars that wear out the pavement, it is lorries. A loaded articulated lorry punishes the surface far more than a car, so two stretches with the same AADT but a different share of heavy vehicles age at very different rates. That is why this percentage is the most consulted figure after AADT, and why IRIS counts by vehicle type and not just the total. The 14 % on the screen is an example from the illustration, not a measurement.
Does this replace a traffic counting station?
It does not replace an approved station where regulations require one. What it does is cover what is not measured today: the permanent station is expensive and therefore rare, and the portable counter is set up for a few days a year with the rest extrapolated. The camera is already installed and counts every day of the year, by direction and by type. And the way of counting is drawn once and stored, so March's figure is measured exactly like October's and the two can be compared.
A different case every time
A new case each time. Always the same screen.
It plays by itself and shows one case from start to finish. It is a summary: the real screen has far more functions than fit in this box.
- Checks the whole system
- Flags what is failing
- Puts it on one screen
Next step
Why did the line stop?
237 cases, and in every one of them IRIS raises an alert when something happens. You see each image as it is, and then with what it understands on top.
How many bays are free right now?
15 cases: 9 raise an alert when something happens and 6 only measure. You see each image as it is, and then with what IRIS understands on top.
And the best part
You decide once what matters to you.It stops depending on who happens to be on shift.
You say it in your own words and it stays written down. Nobody has to remember anything at the start of a shift: what you decided is already in place, and still there tomorrow.
Tell us your problem and we will say whether IRIS understands it, or not yet.
We reply the same working day.