Every term here is one we have had to explain in a real buying conversation. Definitions first, then the part that actually matters commercially.
Telematics is the combination of telecommunications and vehicle informatics — transmitting data about a vehicle’s location, condition and use over a network to a system that stores and interprets it.
In practice the word covers everything from a basic position tracker to a system reading engine load off the CAN bus. The distinction that matters commercially is not the label but the data depth: see GPS vs telematics.
GPS tracking is determining a vehicle or asset’s position using the Global Positioning System satellite constellation, then transmitting that position to a server over a cellular or satellite link.
The GPS receiver only calculates position. Everything else — transmission, storage, mapping, alerting — is done by the tracker’s modem and the platform behind it, which is why two devices with identical GPS chips can behave very differently.
A white-label GPS platform is a ready-built tracking system that a reseller sells under their own brand, domain and mobile apps, with the original developer invisible to the end customer.
It is the difference between spending two years building a platform and being live under your own brand in days. The trade-offs are covered in white-label vs custom.
A VMS is a platform that manages the whole lifecycle of a vehicle fleet — tracking, maintenance, documents, drivers, costs and compliance — rather than only its live position.
The term overlaps heavily with "fleet management software". Where a distinction is drawn, VMS usually implies deeper asset and cost management, including purchase, warranty, insurance and disposal records.
AVL is the automated determination and reporting of a vehicle’s geographic position, and is the technical term that appears throughout tracker protocol documentation.
Teltonika’s Codec 8, for example, describes its records as AVL packets. If you are reading protocol specifications, AVL and "position record" mean the same thing.
The CAN (Controller Area Network) bus is the internal network a vehicle’s own electronic units use to communicate, carrying data such as engine load, real odometer, fuel consumed and fault codes.
Reading it turns estimated figures into the vehicle’s own numbers. Depth, installation and coverage caveats are on the CAN bus monitoring page.
OBD-II is a standardised diagnostic port and protocol set present on most light vehicles built from roughly 2008 onward, exposing a defined list of parameters through a physical connector.
It sits on top of CAN rather than replacing it. OBD-II is simpler to install — a plug rather than wiring — but exposes less than reading the bus directly, and the plug can be removed by a driver.
J1939 is the CAN-based standard used by heavy commercial vehicles, and FMS is the standardised subset of it that truck manufacturers expose to third-party telematics devices.
If you are fitting trackers to trucks, FMS is the interface you are usually reading. Coverage still varies by manufacturer and build specification, which is why one vehicle of each type should be tested before a fleet-wide hardware order.
An LLS (liquid level sensor) probe is a capacitive sensor fitted into a fuel tank that reports the actual level of fuel, typically over an RS232 or RS485 serial connection to the tracker.
It measures the tank rather than trusting the vehicle gauge, which is what makes siphoning detectable. It is only as accurate as its calibration — see fuel monitoring.
An iButton is a small contact-read identification chip, touched against a reader in the cab, used to record which driver is operating a vehicle at a given time.
Without driver identification you are scoring vehicles rather than people, which makes any behaviour programme on a shared vehicle indefensible.
LBS (location-based services) positioning estimates a device’s location from nearby cell towers rather than from GPS satellites, and is used as a fallback when no satellite fix is available.
Accuracy is typically hundreds of metres to kilometres rather than metres. A platform should display an LBS position as distinctly lower confidence, because presenting it as a GPS fix makes it useless as evidence.
A geofence is a virtual boundary drawn around a location or along a route, used to trigger an event when a vehicle enters, leaves or lingers inside it.
The technology is commoditised; the settings are not. Boundary drift and alert routing decide whether it survives past month three — see geofencing.
Idling is time during which a vehicle’s engine is running while the vehicle is stationary and not performing work, and it is usually one of the largest recoverable costs in a fleet.
In Gulf conditions, distinguishing wasteful idling from cab cooling matters — a threshold imported from a European fleet will flag nearly every driver and discredit the programme.
A PTO is a mechanism that transfers engine power to auxiliary equipment such as a crane, mixer, tipper or compactor, and its state distinguishes a machine that is working from one that is merely running.
On plant and specialist vehicles, PTO state is what separates billable working time from idle time. Without it, engine hours overstate utilisation.
Engine hours are the cumulative time a vehicle’s engine has run, and on plant and heavy equipment they are the billing unit, the service interval and the utilisation metric at once.
Read from CAN they are the machine’s own figure. Inferred from ignition state they are an approximation that a hire client can dispute.
Harsh events are sudden accelerations, decelerations or cornering forces exceeding a configured threshold, detected by the tracker’s accelerometer and used as driver behaviour indicators.
Detection is reliable; attribution of cause is not. A harsh brake caused by another driver cutting in is identical in the data to one caused by following too closely.
Route playback is the replay of a vehicle’s recorded journey on a map, including stops, idling periods and events, used to reconstruct what happened during a given window.
It is the artefact that settles most disputes, which is why fuel and behaviour events should link directly to the playback around them rather than living in a separate report.
Dwell time is how long a vehicle remains inside a defined location, measured automatically from geofence entry and exit timestamps.
Frequently more commercially valuable than the alerting it came from — dwell timestamps feed site-time billing, payroll and customer SLA reporting.
Multi-tenancy is a single platform instance serving multiple independent customers, each seeing only their own vehicles, users and data.
It is what allows a reseller to run many client accounts on one system. Isolation between tenants is a question worth asking a vendor directly rather than assuming.
An uptime SLA is a contractual commitment to a percentage of availability over a period, and it rewards arithmetic: 99.9% permits roughly 43 minutes of downtime in a 30-day month, while 99.5% permits over three and a half hours.
Read what it covers as well as the number. A platform whose web interface is up while device data silently stops arriving is down, whatever the status page reports.
Data residency is the requirement that data be physically stored within a specified country or region, and in GCC government and semi-government tenders it is frequently the first question rather than a technical footnote.
Ask about backups separately — backup location is often a different answer from primary storage, and it is the one that fails an audit.
Data retention is how long historical position and event records are kept before deletion or archiving, and together with device count and reporting interval it is one of the three numbers that determines server sizing.
Set it from your dispute and insurance window, not from a default. An event you cannot produce six months later is an event you cannot act on.
A REST API lets your own systems query the platform for data, while webhooks push events from the platform to your systems as they happen.
The practical difference: an API is for "tell me the state", a webhook is for "tell me when something changes". ERP and billing integrations normally need both.
The reporting interval is how often a tracker transmits a position record, and it drives both data cost and server load more than any other single setting.
A device reporting every 30 seconds produces 2,880 records a day. A thousand of them produce close to 2.9 million a day — which is why sizing starts here.
The obvious SEO play is a separate page for every term — "what is telematics", "what is a geofence", and so on. We deliberately have not done that, for two reasons.
The first is that most of those pages would be thin, near-identical and indistinguishable from the hundreds already published by every competitor in the market. Both of the playbooks this site is built against warn explicitly against exactly that pattern, and they are right.
The second is cannibalisation. A "what is geofencing" page would compete directly with our geofencing page, which is the one that should rank — it answers the same question and then tells you how the feature fails in practice. Splitting the intent across two URLs weakens both.
A single reference an installer, a procurement officer or a first-time reseller can scan while reading a proposal, with each entry self-contained enough to make sense on its own and linked onward where there is real depth to go to. If you are being quoted for something and a word in the quote is doing work you cannot see, it is probably here.
If a vendor is using a term you are not sure about, ask us before you sign rather than after. Send us the quote or message us on WhatsApp — a second opinion costs nothing and we will tell you plainly if the proposal is reasonable.
GPS tracking answers where a vehicle is. Telematics covers that plus data about how the vehicle is being used and what condition it is in — engine load, fuel consumption, driver behaviour, fault codes. Every telematics system includes GPS tracking; not every GPS tracker is a telematics system.
The GPS receiver does not — position is calculated from satellite signals with no network involved. Transmitting that position does, which is why trackers carry a SIM. A device with no coverage continues calculating and buffers records on board, then sends the backlog when the link returns.
Typically within a few metres in open conditions, degrading in urban canyons, tunnels and dense cover where satellite signals reflect or disappear. When no fix is available a device may fall back to cell-tower positioning, which is accurate to hundreds of metres at best and should be displayed as such rather than presented as a GPS fix.
That the platform carries your brand end to end — your logo, your domain, your mobile apps in the stores, your name on the emails the system sends. Partial white-labelling, where the original vendor still appears on a login screen or in an app store listing, is discovered by your customer rather than by you.
Because device count multiplied by reporting frequency is what actually determines data volume. A thousand trackers reporting every 30 seconds produce close to 2.9 million records a day; the same thousand on a five-minute interval produce under 300,000. Retention length then multiplies whichever figure applies.
Ask and we will answer plainly — and add it here if others are likely to be wondering the same thing.
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