Sectors
Sensor-led collection for councils
Street bins, bring sites and communal containers on waste collection rounds set years ago — and the evidence gap every time a complaint reaches a member.
For a UK council, sensor-led collection does three things at once: it removes the lifts that go to bins nobody filled, it stops the specific bins that generate complaints from overflowing, and it produces a timestamped service record you can put in front of a resident, a councillor or an FOI request.
The first pays for the system. The second and third are usually why it survives the next budget round.
Where the money actually is
Street and park bins are the most over-serviced part of most authorities' waste operation, because the frequency was set to protect against the worst case and never revisited. Stralsund — a town of 55,000 collecting 180 tonnes a year from public bins — was emptying its town-centre bins twice a week. After instrumenting 35 of them, weekly collections fell from 1,548 to 445, a 71% reduction, and weekly mileage from 1,677 km to 779 km. Working hours on the task fell 30%, and staff moved to other work that had been waiting.
Vejle Municipality, running 875 public bins along 2,000 km of roads, went from emptying bins once or twice a week to an average of once a fortnight after fitting sensors to 547 of them. Crewing on the task fell from two full-time staff to one and a half, and the department expects the evaluation to confirm 30% less travel, a 40% economic gain and 5.5 tonnes less CO₂ a year.
Neither authority reduced the service residents receive. Both stopped paying for journeys that produced nothing.
Beyond the saving
The three arguments that carry a committee
Evidence against complaints
Every reading and every lift is timestamped. When a resident reports a bin unemptied for a fortnight, you check and answer the same day. Fanø Municipality specifically cites being able to document whether containers were emptied — and Vejle's department head values being able to give elected members a straight answer when constituents ask.
A carbon number you can defend
Most council climate reporting on fleet is modelled. This is counted: journeys not made, kilometres not driven, fuel not burned. It contributes to a declared climate emergency commitment without asking residents to change anything, which is a rare combination.
Fewer bins, permanently
Bin estates grow by accretion — a complaint arrives, a bin is added, nobody reviews it. Fill history shows which containers overlap and which are barely used. Vejle began removing redundant bins on that evidence, taking a lift and a maintenance liability out of the estate for good.
There is the little extra plus that we can quickly respond to our elected politicians when they get questions from concerned citizens about the waste bins. The politicians like that we do not make unnecessary trips, because it shows that we also consider the climate.Head of Roads & Parks — Vejle Municipality, Denmark
Procurement
Getting it bought
The procurement route is usually the slowest part, and there is a well-worn path through it.
Most authorities start with a pilot small enough to sit under their delegated spend threshold. That gets sensors on real bins and real numbers in hand within a couple of months, without a tender. The pilot report — measured against a baseline recorded before anything changed — is then the evidence supporting the business case for a wider award, whether that goes out as a direct award, a framework call-off or a full tender.
Vejle followed precisely this sequence: funds allocated for a pilot on a single trial route, a demonstrated optimisation potential and positive business case, then a council decision to roll out across the municipality.
We are happy to provide the technical detail your procurement team needs to write an evaluable specification. The single most valuable line to include is radar rather than simply “fill-level sensors” — it is the difference between a pilot that convinces and one that produces arguments about false readings.
Typical council deployment
- Start with
- One round or one geographic cluster, 30–60 containers
- Pilot length
- 90 days, including 2–4 weeks observing before changing any collections
- Live in
- 4–6 weeks from go-ahead
- Threshold
- Usually 80–90%, tuned in the first two months
- Who owns it
- One named officer coordinating waste, highways, fleet and IT
- Prerequisite
- An accurate container register — type, capacity and GPS position
- Deliverable
- Measured before-and-after against your own baseline, and a costed rollout plan
The awkward question
What happens to the crews?
Ask it early, because your drivers will. A system that visibly reduces the number of lifts looks, from the cab, like a system that reduces the number of jobs — and a crew that believes that will find reasons the round plan is wrong.
The deployments worth citing redeployed rather than cut. Stralsund reduced working hours on the task by 30% and moved staff to other urgent work. Vejle went from 2.0 to 1.5 full-time staff on bin emptying and used the freed capacity to start collecting waste along roads and at bridges — work that had never previously reached the top of the list. Most UK authorities have a comparable backlog of grounds, fly-tipping and street cleansing work that has been quietly deprioritised for a decade.
- Decide the answer before the pilot starts, and say it plainly to the crews at the briefing.
- Show drivers the fill data. The app tells them why each bin is on the round, which turns a directive into something they can check.
- Let them plan the sequence. On several deployments drivers order their own stops from the flagged list and prefer it that way.
- Expect contractor drivers to worry too — fewer lifts can look like less invoicing, when in practice it is less unpaid time spent checking half-empty containers.
Questions
Questions from local authorities
We are under severe budget pressure. Is this affordable?
It is sold as an annual per-container subscription rather than a capital purchase, which usually makes it a revenue rather than a capital decision. On whether it pays back: Stralsund reported that its 35-bin pilot paid for itself in under a year purely through avoided collections and mileage, and extended the deployment by a further 100 sensors on that basis. The honest caveat is that the return depends on how over-serviced your current rounds are, which is unknown until measured — and the pilot exists to establish it at small cost.
Which bins should we start with?
Street and park bins on fixed frequencies, and rural or edge-of-town bring sites. Those are where the ratio of wasted journeys to useful ones is highest. Town-centre bins that genuinely fill daily have less slack to recover; a bin at the far end of a 20-minute drive that fills every three weeks has a great deal. A good pilot round mixes both so the report reflects your real estate rather than the best case.
Can we use this on kerbside household collections?
Not usefully. Kerbside rounds pass every property regardless, so there is no journey to avoid. Sensor-led collection applies to containers a vehicle travels specifically to reach: street and park bins, bring sites, communal housing containers, HWRC containers and trade waste. That is where the wasted mileage sits.
How does this fit a declared climate emergency commitment?
It reduces fleet emissions without reducing service or asking residents to change behaviour, which makes it unusually easy to defend politically. The numbers are counted rather than modelled: Stralsund's weekly mileage fell from 1,677 km to 779 km, and Vejle targets a 5.5 tonne annual CO₂ reduction alongside 30% less travel. Vejle's department head notes that members like being able to show that unnecessary journeys are not being made.
Our container records are incomplete. Is that a blocker?
It is the most common starting position and it is fixable, but it has to be fixed rather than worked around. Every successful deployment rests on an accurate register of container type, capacity and GPS position, maintained by one named person — Vejle's team are explicit that this discipline is the precondition for everything else. We offer a fixed-price survey where the data is patchy. It is far cheaper done deliberately at the start than discovered halfway through a rollout.
What if the service is delivered by an arm's-length company or a contractor?
It works either way. Contractors receive rounds directly in the driver app and confirm each lift, which also generates clean invoicing data — Fanø Municipality connected its contractor for exactly that reason. The authority keeps the dashboard, the history and the evidence, which matters at contract review whoever holds the vehicles.
Next step
See what your own bin data would say
A 90-day pilot on one round tells you exactly how much of your current collection effort is going to bins that were not full. No commitment beyond the pilot, and you keep the data.