Routes, working hours, deadlines — all under control.
Klacks plans routes and drivers — with the 11-hour duty limit of the GB Domestic Drivers' Hours Rules configured as a working-time limit, and routes for light vans that will newly require a tachograph in cross-border traffic from July 2026.
Note on the sample data: All names, places (for example Winterthur), addresses and figures in these recordings are fictitious demo data with a Swiss background, written in Latin script. They only illustrate the product – you do not need to know or be able to read them. In your own installation you enter your own data, and the interface is multilingual.
GB Domestic Rules and the new tachograph requirement
Complying with GB Domestic Drivers' Hours
For purely domestic transport, the Transport Act 1968 Part VI sets a maximum of 10 hours' driving time and 11 hours' duty time per day — barely possible to guarantee by hand across many drivers and routes.
Light vans requiring tachographs from July 2026
From 1 July 2026, vehicles between 2.5 and 3.5 tonnes will newly require a tachograph, including a digital tachograph, for cross-border journeys (or cabotage) into the EU, Iceland, Liechtenstein, Norway or Switzerland.
Two rulebooks to track at once
Purely domestic GB transport stays under the GB Domestic Rules, while cross-border light-van journeys will additionally be subject to the tachograph requirement — working out by hand which rule applies to which route is difficult.
Your finished shift plan in three steps
Install
Klacks is installed on your own infrastructure — via Docker; allow about half an hour for the first start.
Adjust rules
Public holidays and rest periods come preconfigured for your country, surcharges where defined for your country — and you can adjust them anytime.
Plan automatically
Klacks builds shift plans, flags conflicts and optimizes routes — with an AI assistant if you want.
How Klacks takes the load off logistics in the UK
From optimised routes to the new tachograph requirement — everything works together.
Routes automatically optimised
Klacks sequences stops in the most sensible order — short journeys, time windows met, fewer empty runs.
11-hour duty time continuously monitored
You configure the 11-hour duty-time limit under the Transport Act 1968 as a daily maximum working time; Klacks makes it visible at every route planning stage and warns in good time before it is exceeded. On request, Klacks hard-blocks a breach in automatic planning; with manual planning it stays at a warning. Klacks does not check the 10-hour driving limit — it continues to be evidenced by the tachograph data.
Domestic and cross-border routes kept separate
You keep purely domestic GB transport and cross-border light-van routes that will newly require a tachograph from July 2026 in separate groups in Klacks — the tachograph itself covers the tachograph requirement.
Matching licence categories
Klacks only assigns routes to drivers with the matching licence category — and warns before documents expire. If a required document is missing or has expired, Klacks refuses the assignment, in manual planning too.
Installed on your premises: data on your servers
Klacks runs on your own infrastructure — route and driver data are stored on your servers — and with a locally hosted AI model, no AI request goes to an external AI provider.
Klacksy understands your request
"Plan tomorrow's routes, driver Smith is off sick" is all it takes — Klacksy starts the replanning, and the planning engine takes the configured working-time limits into account.
What Klacks can do — in real recordings
Short videos from the running app, sorted by topic. Choose a chapter; only the video of the open chapter ever plays.
Note on the sample data: All names, places (for example Winterthur), addresses and figures in these recordings are fictitious demo data with a Swiss background, written in Latin script. They only illustrate the product – you do not need to know or be able to read them. In your own installation you enter your own data, and the interface is multilingual.
- Klacksy helps you get it right in every one of these cases: describe your rule in the chat in your own words, for example “Sundays earn a 50% surcharge.” — Klacksy asks follow-up questions, shows a preview and only saves once you confirm.
- Klacksy also creates scenarios and starts planning inside them — tell it in the chat, for example: “Plan Winterthur from November 2 to 8.”
- Klacksy, the built-in AI assistant, can also do all of this for you on request — for example, tell it in the chat: “Add expenses of 24.50 for Mia on October 6.”
A calendar for every nation
Bank holidays are anything but uniform across the United Kingdom: England & Wales, Scotland and Northern Ireland each observe their own set of statutory holidays, and individual councils add local holidays on top — such as Glasgow Fair Monday, the third Monday in July. Klacks handles exactly what simple tools get wrong.
- Three nations, three sets of holidays2 January and St Andrew's Day (30 November) are bank holidays only in Scotland; St Patrick's Day (17 March) and the Battle of the Boyne — known as "the Twelfth" (12 July) — only in Northern Ireland: pre-configured and ready to use.
- Mix calendarsA care, security or logistics business with sites in London, Edinburgh and Belfast runs all three calendars side by side — including bank holiday premiums and the reduced staff availability on days when nurseries and schools close in only one nation.
- Binding or purely informationalFor each calendar, you decide whether a bank holiday affects hours & premiums — or simply appears as a reminder.
It all comes down to the settings
Klacks offers countless ways to calculate rules and hour credits for nights, weekends, public holidays and overtime — exactly the way your contracts and company agreements require.
- Nights and weekends You set the night window and the surcharge rates yourself, and choose up to three weekend days — as a multiplier that is added to the hours worked as a time credit in hours.
- Public holidays and overtime A separate public-holiday rate, and overtime per day or per week in up to three tiers. When several surcharges fall on the same hour, the highest one applies — or all of them add up.
- Your own calculation with a macro If that is not enough, a macro does the maths: a short script using weekday, time of day, public holidays and contract values — with conditions, loops and functions of your own.
- Scheduling rules Rest periods, maximum daily and weekly hours, consecutive working days, free Sundays or hour caps per period — each one as a warning or, in automatic planning, as a block.
Rule violations: Klacks warns you instantly
Klacks flags time collisions, rest periods that are too short, too many consecutive working days and work on holidays right as you plan — as an error or warning in the error list.
Rest period too short - Video 1 of 4
Facts, not promises
open-source code
languages
industry solutions
countries
The best route — automatically
From your service addresses, Klacks works out the most sensible order and shows the finished route on the map. All you choose is the mode of transport.
- 1Capture addresses Every service location has an address on file — Klacks knows the way.
- 2Optimize the order Klacks works out the shortest sensible sequence — detours and empty runs are reduced.
- 3Show it on the map The finished route appears on the map — by car, bike, or on foot.
Stylized example: Klacks connects the service locations into the shortest route.
Mixed fleet, one plan
You keep purely domestic GB transport under the GB Domestic Rules and cross-border light-van routes that will newly require a tachograph from July 2026 in separate groups in Klacks — Klacks checks the configured working-time limits for both, and the tachograph evidences driving time.
See Klacks in your logistics business
Try the Playground to see how Klacks plans routes, working hours and drivers — or install it directly on your own infrastructure. No license fees, with no registration required.
Klacks is open source under the AGPL-3.0. Host it yourself, keep your data with you, pay no license fees — you stay in full control.