Two drivers, the same vehicle, the same route: by the end of the month one has used 15% more fuel than the other. The difference isn’t in the vehicle, it’s in the driving style. Driver scoring is the way to make it measurable—and therefore improvable.
Let’s look at what it actually measures, what it affects and how to use it without turning it into a punitive tool.
What driver scoring is
Driver scoring is an assessment of driving style built from the vehicle’s telematics data. Instead of relying on impressions, it assigns an objective score to each driver based on events detected while driving:
- Harsh braking: indicates short following distances or inattention.
- Aggressive acceleration: increases consumption and wear.
- Corners taken too fast: risk and mechanical stress.
- Speeding: safety and fines.
- Idling: fuel wasted with the engine running while stationary.
The combination of these events, normalized over distance driven, produces a score that is comparable across drivers and over time.
Why driving style matters (in euros)
Scoring isn’t a theoretical exercise: each component has a direct economic impact.
- Fuel: smooth driving cuts consumption. In trucking eco-driving programmes the average reduction sits between 5% and 10% (Nævestad and Hesjevoll, 2023), and it’s one of the most immediate savings.
- Safety: fewer risky events means fewer accidents, less downtime and lower insurance costs.
- Maintenance: harsh braking and acceleration wear out brakes, tyres and transmission early.
- Emissions: less fuel means less CO2, useful also for ESG and CSRD reporting.
- Residual value: a well-driven vehicle depreciates less.
Putting a number on these behaviours is the first step to reducing them.
How driver scoring is measured
The score is built from the data of a fleet tracking and management system: telematics records driving events, weights them and relates them to distance. Data quality matters—a good system tells a legitimate emergency stop from a recurring habit, and accounts for context (urban vs. interurban). A crude score that punishes every brake loses credibility with drivers and stops being used.
How to use it well: coaching, not punishment
The most common mistake is turning scoring into a surveillance tool. It works much better as an improvement tool:
- Share the criteria with drivers: they should know what is measured and why.
- Give constructive feedback, not humiliating leaderboards.
- Recognize improvements, not just mistakes.
- Tie scoring to concrete goals (fuel, safety), not control for its own sake.
Mind the legal framework too: monitoring driving behaviour touches the worker’s privacy, and in Italy it requires a union agreement or Labour Inspectorate authorisation even when the system does not record position. In December 2025 the Garante fined €120,000 a company whose leased telematics gave employees a driving score, computed on private trips as well, with no procedure at all (decision 755 of 18 December 2025). Notice and limits must be respected, as we explain in the guide on company GPS and employee privacy, which also collects the 2025-2026 Garante fines on driver scoring and GPS.
Who sees the score and how scoring should be configured
The rules say whether you may measure. You still have to decide how to configure the system, and here interface choices weigh as much as the union agreement. In decision 755/2025 the Italian data protection authority (Garante) examined the access profiles one by one (driver, supervisor, administrator) and rejected a privacy notice that described the recipients as “those who need to know them”. Who sees the score is therefore part of the notice and of the agreement, and it has to be decided before accepting the vendor’s default settings. The criteria below apply to any telematics platform: they are the questions to ask before signing.
Who sees the score
The fleet manager, because the role requires it, and each driver for their own. Since 2011 the Garante has limited access to vehicle data to the staff who, by reason of their duties, need that information to do their job, naming logistics, maintenance and human resources. A colleague has no duty that requires another driver’s score. The individual card, with the trend over time and the comparison with the previous month, is the most defensible part of scoring: feedback for the person driving, a working figure for the person coordinating.
Peer leaderboard: an explicit choice, never the default
No source we read expressly forbids ranking employees. It is, however, an additional processing on top of the score, with an additional recipient (every driver) and no purpose under article 4 of the Italian Workers’ Statute to support it. If the company wants it, it goes into the union agreement or the Labour Inspectorate application, preferably anonymous or by group, and it must not be the system’s opening screen. A name in red at the bottom of the list, in front of colleagues, is the textbook case for the measures to safeguard human dignity that article 88 GDPR requires of workplace monitoring systems.
Retention proportionate to the purpose and written in the notice
The Garante requires retention periods to be proportionate to each of the purposes actually pursued. The durations censured so far: 180 days of continuous positions (decision 7/2025), 13 months of events and scores (755/2025), six months set by default by the vendor while the agreement with the works representatives said two years (382/2026). None of these is a threshold. What failed was the missing link between duration and purpose, or between the system setting and the signed document. A score used for coaching needs a few months, and the chosen duration must be readable by the driver in the notice.
Events declared one by one, with no pause monitoring
The notice must list the events that make up the score and how they are weighted: harsh braking, acceleration, cornering, speed above threshold, idling. Everything that measures pauses rather than driving stays out of the score. The “prolonged stop” that some platforms count among driving events is activity monitoring: recording position during work breaks is one of the violations in decision 7/2025, and in 2026 the Italian Supreme Court held unlawful a dismissal based on stops recorded by a tracker. Speed enters as a safety figure; prosecuting violations is for the authorities.
No automatic consequences
The score is a profile under article 4(4) GDPR: it evaluates a person’s work performance. If on its own it triggers bonuses, shifts, route assignments or warnings, it becomes an automated decision under article 22, and human involvement must be real: a manager who reads the figure and decides. A signature on what the system has already determined, the European guidelines on profiling say, is a token gesture and is not enough. The model accepted in 755/2025 is the interview opened by the supervisor. For disciplinary use, the limits are those in our guide on company GPS and employee privacy: a notice for each tool, proportionate collection, purposes written in the document and, for companies applying the Italian logistics collective agreement, the exclusion of tracker data from disciplinary charges.
What the big vendors do
The official pages of Samsara, Webfleet, Verizon Connect and Geotab, read in November 2026, all show individual scores. Where a peer comparison exists it is a feature to switch on: none offers it as the opening view.
| Vendor | Individual score | Peer comparison | Stated safeguards |
|---|---|---|---|
| Samsara | Safety Score out of 100, in the driver app | Safety Leaderboard, off until the administrator enables it | Note against employment decisions based on scores alone; DPIA recommended |
| Webfleet | OptiDrive 360, with in-cab feedback | Peer ranking with company averages | ”Anonymisation options” on the comparison; private mode on the terminal |
| Verizon Connect | Driver Scorecard in the driver app | Rankings against peers in the app | Default retention period stated for European customers |
| Geotab | Driver Safety Scorecard and gamification add-ins | Ranking through the add-ins | 2026 European guide: masked driver names in the portal, role-based access, short retention |
Samsara’s safety programme rollout guide states, under the leaderboard image, that employment decisions (hiring, termination, compensation, route and hours assignments) should never be based on Safety Scores alone, which should remain one data point for a decision made by a supervisor. These are the criteria to put to any vendor: scores to the manager and the driver, a leaderboard that is off by default and can be anonymised, configurable retention, no automation.
Frequently asked questions
What data is needed to calculate driver scoring?
You need driving data collected by the vehicle’s telematics: braking, acceleration, cornering, speed and idling, related to distance driven. It can come from a device connected to the diagnostics or, on many modern vehicles, directly from the manufacturer’s native data.
Does driver scoring really reduce fuel consumption?
Yes, indirectly: by measuring and improving driving style, a fleet cuts consumption, on average by 5-10% according to the literature on eco-driving programmes. Scoring doesn’t act on the engine, but on behaviour—which is one of the main levers of fuel cost.
Is it legal to monitor employees’ driving style?
Yes, under precise conditions, which in Italy apply even when the system does not record position: a union agreement or Labour Inspectorate authorisation that names the scoring, a specific purpose, a notice describing events, recipients and retention, and a data protection impact assessment. Monitoring must be proportionate and not constant surveillance of the individual. See the deep dive on company GPS and privacy.
How do you keep drivers from rejecting scoring?
By using it as a coaching tool rather than a punitive one: transparent criteria, constructive feedback, recognition of improvement and goals tied to fuel and safety. A score perceived as fair is accepted; one perceived as surveillance is sabotaged.
What does a fair driver scoring system look like?
It measures driving events only (braking, acceleration, cornering, speed, idling), declared one by one with their weight. It shows each driver their own score and trend, and the fleet manager the team’s. It keeps the data for a few months, as written in the privacy notice, and never triggers a consequence on its own. Any comparison between colleagues is a choice the company makes with its staff representatives, preferably anonymous. A score built this way can be checked and improved by the person it describes, which is what makes it acceptable.
Can drivers see their colleagues’ ranking?
Only if the company has chosen it and written it into the union agreement (or the Labour Inspectorate authorisation) and the privacy notice, preferably anonymous or by group. The starting configuration is different: each driver sees their own score and trend, the fleet manager sees the team’s. None of the rules and decisions we read expressly forbids a leaderboard. It is, however, an additional processing with no article 4 purpose behind it, and the big vendors keep it off until the administrator switches it on.
The next step
Want to measure and improve your fleet’s driving style? Discover OptivoTrack or book a demo.