Fleet decarbonisation: CSRD data and CO₂ savings

How can a company turn a regulatory constraint into a source of efficiency? LogiTrans Nord asked itself that question. It is a mid-market transport company based in Lille, with 380 employees. It decided to build fleet decarbonization into its 2026 strategy. Over eighteen months, it combined smart toll transponders, on-board energy tracking, and close partnerships with mobility suppliers. The result is a fleet management model that is both sustainable and profitable.

Fleet decarbonization: where does the pressure come from?

By 2026, European rules require companies with more than 250 employees to publish precise indicators under the CSRD (Corporate Sustainability Reporting Directive). For transport companies, this means careful measurement of kilometres driven, fuel used, and CO₂ emitted. A conventional fleet can account for as much as 40% of a logistics company's total carbon footprint.

Finance and CSR teams are mobilizing. Their question: how do you cut the carbon bill without hurting productivity? Digital tools, in particular the latest toll transponders, are turning into automatic reporting tools. In France, more than 80 % of companies with ten or more commercial vehicles already use a toll system. Yet very few make real use of its environmental data.

The direct impact of toll transponders on emissions

At first glance, a toll transponder looks like a simple convenience gadget. Yet its role in fleet decarbonization can be measured. The idea is simple: it removes stops and restarts at toll booths. These are a major source of extra fuel use and emissions. On a typical motorway trip from Lille to Lyon, a commercial vehicle stops six times on average. Smoother traffic saves up to 0.5 litres of fuel per toll plaza.

Data for reporting

Modern transponders collect data on each passage: time, place, and average speed. This data can be exported to fleet management platforms. Combined with GPS tracking and on-board telematics, it gives a solid base for tracking carbon intensity. Tools such as Swile Fleet and Edenred Mobilité now offer APIs that return this data in CSRD-compatible formats.

The cumulative effect over a year

Vehicle type	Stops avoided/year	Litres saved/year*	CO₂ avoided (kg)
Light commercial vehicle	800	400	≈ 1,040
Heavy goods vehicle	600	900	≈ 2,340
Electric vehicle (indirect gain)	-	-	Optimised charging time

*Average figures from 2025 field feedback. Check them against your own fleet.

LogiTrans Nord case study: an integrated mobility strategy

LogiTrans Nord is based in Lesquin and runs 120 trucks and 90 light commercial vehicles. Non-road diesel prices were rising, and the Euro 7 standard is expected in 2027. So management launched a "Route 2026" plan with three pillars: driver training, digitising processes, and targeted electrification.

Training and eco-efficient driving

Every driver took two days of eco-driving training. Toll transponders linked to the on-board telematics system produced a performance report for each driver. It showed harsh acceleration, idling time, and routes with high fuel use. Monthly feedback creates a loop of steady improvement.

Digitisation with Greenway

LogiTrans Nord wanted to pay for fuel, tolls, parking, and charging points in one place. It chose Greenway, the all-in-one corporate card with impact. The platform brings all expenses together and feeds a built-in CSR dashboard: consumption, electrification rate, and avoided emissions. The 1%ForAll® partnership sends a share of service fees to certified reforestation projects. The company can track its decarbonization progress objectively, and its accounts are simpler.

Avoided costs and new regulatory obligations

An environmental monitoring system is no longer optional. From 2025, every company subject to CSRD must track Scope 1 and 2 emissions. Scope 3 (the upstream and downstream chain) follows step by step. Carriers and their subcontractors will need to provide consolidated data.

Indicative investment schedule

Item	Average unit cost (€)	Payback period
Connected toll transponder	25–35	3 years
Integrated management platform	300–500 /year	–
Eco-driving training	250 /driver	2 years
All-in-one corporate card (e.g. Greenway)	variable	–

These costs are modest compared with total cost of ownership (TCO). They also cut admin work and the risk of non-compliance. In addition, some regions still subsidise carbon audits and eco-driving training. Check with your regional chamber of commerce.

How to structure your decarbonization roadmap

Experience shows that successful projects are planned over three years. The CFO, the CSR lead, and operations steer them together. Here is a framework that many mid-market companies use.

1. Diagnose

Audit your flows: fuel, kilometres, tolls, maintenance. Compare them with journey times (transponder data). This gives you your baseline in tCO₂.

2. Prioritise

Rank actions by their real carbon return. Partial electrification or a switch to biodiesel can come later. Start with organisational measures: better scheduling, no more empty runs, transponders, and digital tools.

3. Equip and train

Roll out transponders and corporate cards step by step, and equip your drivers. Train them to read transponder data. A cold engine at departure or long idling weighs heavily on your CO₂ assessment.

4. Measure and publish

Feed your CSR report with consolidated data from your systems. Tools like Greenway export XBRL-compatible files. This makes handover to your statutory auditor easier.

Mini FAQ

How do I choose a toll transponder suited to a mixed fleet?

Look for a device that works across networks (motorways, car parks, charging points) and exports data in real time. Check that it works with your fleet management software.

Do electric vehicles really benefit from toll transponders?

Yes. Smooth passage makes it easier to plan charging stops. Some stations even offer dedicated lanes, which cuts overall wait times.

How can I make use of the carbon savings achieved?

Include them in your CSRD report or share them in your CSR disclosure. But document your calculation method (ADEME Carbon Base or GHG Protocol).

Do multi-service cards like Greenway replace toll transponders?

Not entirely. They bring payment and reporting together. The transponder is still the flow tool. The card pulls the data together for a 360° view of your mobility footprint.

Can toll data be combined with internal carbon pricing?

Yes. Some companies set an internal price per tonne of CO₂. They then charge an analytics cost centre based on transponder data. This incentive steers decisions towards lower-emission routes.