Guide

How GSRTC live bus tracking works

Q: How often does the live position update?

Every few seconds while the bus is on an active trip. GSRTC Bus Tracker polls telemetry roughly every 20 seconds and smoothly animates the vehicle marker along the route geometry.

Q: How accurate is a GSRTC bus's GPS position?

Highly accurate. Positioning relies on on-board AIS-140 certified Vehicle Location Tracking (VLT) units, maintaining typical roadside accuracy within 10 to 25 metres.

Q: Why does live tracking sometimes say a bus is not available?

GSRTC only broadcasts GPS telemetry for buses actively operating a scheduled service. A bus at the depot, between shifts, or that has completed its run transmits no telemetry until its next scheduled trip begins.

Behind "the bus is 4 minutes away" is a GPS unit, a public data feed, and some maths against the timetable. Here's what actually happens between the bus and your screen.

Where the position comes from

Under Ministry of Road Transport and Highways (MoRTH) standards, every operational vehicle in GSRTC's fleet of 8,554+ buses is equipped with an AIS-140 compliant Vehicle Location Tracking (VLT) unit. These telematics modules continuously transmit geographic coordinates (latitude and longitude), current vehicle speed, and time-stamped status to the operator's central control servers.

That is the authoritative data stream all tracking tools rely on. GSRTC Bus Tracker polls this telemetry roughly every 20 seconds while a bus is actively running its trip, mapping its coordinates with typical roadside accuracy between 10 to 25 metres and smoothly animating movement along the route.

How "4 minutes away" gets calculated

A raw GPS point on its own doesn't tell you much. GSRTC Bus Tracker combines it with the bus's route and timetable to work out three things: which stop it just left, how fast it's moving, and how long it should take to reach the stop you picked. When the operator's own feed already states the next stop directly, that answer wins over anything worked out locally — it's the more trustworthy number.

Not every number is shown. If the data doesn't support a confident estimate — the bus has been stationary a long time, or the delay looks larger than a real bus would ever run — the app stays quiet rather than showing a figure it can't back up. A blank field is more honest than a wrong one.

Why a bus sometimes can't be found

Live tracking only works for a bus that is actually on a trip. Three common cases show nothing to track, and none of them mean tracking is broken:

The bus is still at the depot and hasn't started its scheduled run yet.
The trip already finished and the bus is now parked or on standby.
The plate was typed with a small difference from how it's registered — GSRTC plates follow a strict format, and the app corrects common punctuation differences but not a wrong digit.

For the full walkthrough on troubleshooting a bus that won't show up, see finding your ST bus's live location, step by step.

Reading the whole route, not just one point

A single position is useful, but the fuller picture — every stop on the route, which ones the bus has already reached, and the real time it reached each — is what turns "somewhere on the highway" into "past Wankaner, running about 8 minutes late." That comes from the same trip data, read stop by stop rather than as one live point. See it on the Routes screen.

Questions people ask

How often does the live position update?

Every few seconds while the bus is on a trip. GSRTC Bus Tracker polls the position roughly every 20 seconds and animates the marker smoothly between fixes rather than jumping.

How accurate is a GSRTC bus's GPS position?

As accurate as the GPS unit fitted to that bus, typically within a few tens of metres on the road. Arrival time estimates carry more uncertainty because they also depend on traffic and stops.

Why does live tracking sometimes say a bus is not available?

The operator only reports a position for a bus that is currently running a trip. A bus at the depot, between trips, or not yet started shows nothing to track — not because tracking failed, but because there is nothing running yet.

See it live for yourself

Type a plate, or search a route. Free, no account.

Open GSRTC Bus Tracker