Build your local everyday carpooling service  

We operate commuter carpooling networks for public transport authorities.
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Backed by the European Commission and
trusted by public authorities across Europe. ISO certified.
Karos is listed with CATP and UGAP

goFLUX ist jetzt Karos

Neuer Name, neue App. Alles andere bleibt gleich.

Karos : Europe's specialist for daily commuting carpooling

Cities, regions and public transport operators face the same challenges: rising demand, limited resources, and growing expectations to deliver mobility that is both sustainable and affordable. This is what carpooling, integrated into public transport networks, provides.
100+
Public authority partners
€144M+
Buying power generated
500k+
Monthly shared rides

From city centers to rural areas: we connect commuting routes

Daily carpooling fills gaps in your public transport network and integrate seamlessly into your mobility ecosystem.
Close mobility gaps across urban and rural areas
Improve access to jobs and key locations
Reduce commuter traffic and CO₂ emissions
Lower commuting costs for residents and employers
Explore the network map
100+ public transport authorities and 600+ companies trust the No. 1 carpool operator in Europe
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Designed to scale across territories
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B2G
France
Rethinking Mobility 
in Ilm-Kreis 6
B2G
France
Rethinking Mobility 
in Ilm-Kreis 5
B2G
France
Rethinking Mobility 
in Ilm-Kreis 4
B2G
France
Rethinking Mobility 
in Ilm-Kreis 3
B2G
France
Rethinking Mobility 
in Ilm-Kreis 2
B2G
France
Rethinking Mobility 
in Ilm-Kreis
Strong 
technology
Smart platform for carpooling in everyday commute
Project management
Building successful regional carpooling networks
Financial incentives
Targeted incentives for sustainable behavioural change

Key factors for a successful regional car-sharing network

Our technology reliably connects carpoolers for their commutes and integrates them seamlessly into the existing public transport network. Through intelligent matching algorithms, intermodal route planning, and real-time validation, individual car trips transform into measurable, scalable mobility solutions, especially in places with poor public transit connections.
A functioning carpooling network doesn’t just happen by itself. We support cities, regions and companies in the targeted development of carpooling solutions – from strategy and the involvement of key employers right through to active on-the-ground communication. This enables us to quickly reach the critical mass that is essential for sustainable adoption in commuter travel.
Financial incentives make carpooling an attractive option for everyday commute. Drivers receive a share of the costs for each passenger they carry, whilst passengers often travel for free as part of their public transport ticket. This combination reduces costs, increases the occupancy of existing vehicles and promotes the long-term use of shared mobility.
Integrated Mobility

Key factors for a successful regional car-sharing network

Strong 
technology
Smart platform for carpooling in everyday commute
Our technology reliably connects carpoolers for their commutes and integrates them seamlessly into the existing public transport network. Through intelligent matching algorithms, intermodal route planning, and real-time validation, individual car trips transform into measurable, scalable mobility solutions, especially in places with poor public transit connections.
Project management
Building successful regional carpooling networks
A functioning carpooling network doesn’t just happen by itself. We support cities, regions and companies in the targeted development of carpooling solutions – from strategy and the involvement of key employers right through to active on-the-ground communication. This enables us to quickly reach the critical mass that is essential for sustainable adoption in commuter travel.
Financial incentives
Targeted incentives for sustainable behavioural change
Financial incentives make carpooling an attractive option for everyday commute. Drivers receive a share of the costs for each passenger they carry, whilst passengers often travel for free as part of their public transport ticket. This combination reduces costs, increases the occupancy of existing vehicles and promotes the long-term use of shared mobility.

Proven impact in real mobility projects

GoFLUX is all about forming carpools easily, for free and without worry, while saving a lot. A great thing with the app: You meet nice people and even get a small ride fee.
Adnan D.
User, Ilm-Kreis
GoFLUX is all about forming carpools easily, for free and without worry, while saving a lot. A great thing with the app: You meet nice people and even get a small ride fee.
Adnan D.
User, Ilm-Kreis

An integrated system: app and reporting platform

Everything you need for reporting and fact-based project management, all in one place, accessible at any time.

Resources

How to set up a carpooling network, and what specific benefits does it bring to regions? In our downloads section, you’ll find white papers, case studies and one-pagers on the impact, key success factors and what we offer regions and transport authorities.
Here you find:
Whitepaper
1-Pager: How carpooling strengthens public transport
1-Pager: Why public carpooling? 10 reasons why.

Frequently asked questions

Karos enables public authorities and employers to structure daily carpooling as a reliable mobility solution, fully complementary to public transport and designed to operate at territorial scale.
How quickly can we launch a pilot project?

A pilot can typically be launched within a few months, depending on the scope and local coordination. Our team handles the digital setup and supports communication, so the service can start activating commuter flows quickly, as demonstrated in our flagship deployments.

Can the carpooling service be customised to our territory's identity?

Yes. We can deploy a mobile application in the colours of your territory, with your branding and local information. This helps residents identify the service as part of their own public mobility offer rather than a generic third-party app.

How do you measure and report the impact of a carpooling programme?

We provide a real-time reporting platform with key indicators such as number of shared rides, registered members, kilometres saved and estimated CO2 reduction. This gives public authorities transparent, evidence-based data to evaluate the programme and report to stakeholders.

What funding or subsidy models can we use to support carpooling?

Local authorities can subsidise rides to make carpooling attractive for residents, often funding a small per-trip incentive for drivers. Karos helps you design a model adapted to your budget and mobility goals, and provides the reporting needed to track public spending against measurable outcomes.

How does Karos integrate with our existing public transport network?

Karos is designed to complement, not replace, your existing transport network. We integrate daily carpooling as an additional layer that connects underserved areas to existing rail and bus lines, activating unused seats in private cars. This extends the reach of your public transport system without requiring new infrastructure.

Let’s get in touch

Reduce commuting traffic and emmisions

Improve access to jobs and key locations

Track results with live KPIs and impact reporting

Let's make carpooling a new standard for everyday transport.