Corporate car sharing in practice: how companies share pool vehicles without chaos

Three employees need a shared vehicle on the same morning. Who has the key? Who last used the car – and in what condition was it returned? Who is actually authorised to drive it? Questions like these arise every day in companies that share vehicles – and they cost more time and frustration than is immediately apparent.

Corporate car sharing is the structured solution to this. Not as a self-service arrangement where everyone somehow comes to an agreement, but as a well-organised system that automatically manages bookings, key handover, driver data and mileage accounting. This article shows how this works in practice – and what matters most.

13 May 2026

Why the traditional pool vehicle model is reaching its limits

In many businesses, pool vehicles are still managed via noticeboards, Excel spreadsheets or, at best, a shared calendar tool. This works as long as the fleet is small and everyone involved is based in the same office. As soon as multiple locations, shifts or departments are added, typical problems arise:

Double bookings, because nobody can see the current availability in real time. Key handovers that depend on someone being present and fail if the previous user isn’t back on time. No traceability of which driver used the vehicle, when and how – and therefore no basis for fair internal cost allocation. And in the event of damage: no clear accountability.

These are not minor issues. They cause real administrative burdens and genuine costs.

A key issue in corporate car sharing that is often underestimated is the physical handover of keys. Even the most digital booking system is of little use if the key is still with the previous user or cannot be accessed after office hours.

The solution: digital key cabinets. Rosenberger Telematics’ corporate car sharing solution is designed to integrate TRAKA key cabinets directly. Vehicle keys are stored securely in an electronically secured cabinet and can only be retrieved by authorised persons within their booked time slot – contactlessly, around the clock, without anyone needing to be physically present.

The collection and return of each key is automatically logged. This ensures complete traceability: who took which key and when – and returned it? Access is granted only to persons with valid authorisation, via RFID chip or numeric code.

This is particularly relevant for businesses with early-shift collections, field staff or dispersed locations where there is no permanently staffed fleet centre.

GDPR and data protection: What companies need to bear in mind

Car-sharing automatically generates personal data: Who used which vehicle and when? What routes were taken? This data is subject to the GDPR and must be protected and processed accordingly.

The solution from Rosenberger Telematics and TRAKA is designed to be GDPR-compliant. Data is stored with an Austrian server provider that also operates in a carbon-neutral manner. Private journeys – where permitted – can be reported separately and protected from employer access, in the same way as with a traditional logbook system.

For works councils and HR departments, which should be involved in the introduction of a car-sharing system, clear data separation and access control are often key criteria.

The short answer: for any business that operates more than two or three pool vehicles and regularly faces booking conflicts, unclear cost allocation or key management issues.

Businesses with the following characteristics will benefit particularly:

• Multiple sites or field service teams that rely on shared vehicles
• Shift work, where vehicles are used around the clock
• Mixed fleets of passenger cars and commercial vehicles allocated to different teams
• Growing demands for internal cost transparency and department-specific billing

A structured car-sharing system is also a sensible first step for companies transitioning their vehicle fleet towards e-mobility: fewer vehicles, better utilisation, and clearly documented.

Conclusion

Corporate car sharing is not a luxury for large corporations – it is an organisational foundation that provides fleet managers in companies of all sizes with an overview, control and a reduction in workload. By consolidating bookings, key access, driver data and billing into a single system, organisations not only avoid day-to-day operational friction but also create the data foundation for informed fleet decisions.

The combination of the COMMANDER booking platform and TRAKA key cabinets offers a decisive advantage: the system works even when no one is in the office.

Would you like to introduce corporate car sharing at your company? In a free demo, we’ll show you exactly how bookings, key handover and journey documentation would work for you.

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Related topics: Corporate car-sharing solution | Fleet management | Digital logbook