51 (Zürich, Seebach – Zürich Altstetten, Bahnhof N)
Line 85:3849:051 · Verkehrsbetriebe Zürich INFO+ · tram
Timetable period 2025
The published figure is the most recently completed timetable period. The current one is below it as a trend — month by month, and never folded into a single figure: nothing is averaged across a timetable change.
December 8, 2024 – December 13, 2025
We cannot say anything here
No journey was reported on this line in this period.
Trend — Timetable period 2026
The current timetable period, month by month. Each month is counted on its own; these rows do not add up to the figure above and are not meant to.
| Month | Share | Coverage | Confirmed | Restated as timetable | Confirmed and exactly on plan |
|---|---|---|---|---|---|
| January 2026 | 94.68% | 99.71% | 99.68% | 0.03% | 0.91% |
| February 2026 | 95.77% | 99.82% | 99.76% | 0.01% | 0.93% |
| March 2026 | 94.37% | 98.29% | 99.1% | 0.11% | 0.86% |
| April 2026 | 96.18% | 99.77% | 99.83% | 0.02% | 1.11% |
| May 2026 | 95.68% | 99.69% | 99.67% | 0.03% | 1.11% |
| June 2026 | 93.29% | 99.61% | 99.57% | 0.04% | 1% |
| July 2026 | 93.31% | 99.47% | 99.49% | 0.05% | 0.97% |
| August 2026 | 95.27% | 99.52% | 99.18% | 0.02% | 1.11% |
| September 2026 | 91.84% | 97.98% | 99.19% | 0.06% | 1.02% |
Every row carries its own coverage. A month below the floor publishes no share — the three columns on the right still say why.
Not measured yet — these months are after the archive's most recent one: October 2026, November 2026
By hour of day
When an hour starts decides more about punctuality than almost anything else measured here.
Over the last 365 days in the archive, not the timetable year above — so the grid shows the hours as they run now.
October 1, 2025 – September 30, 2026
| Hour | Mon | Tue | Wed | Thu | Fri | Sat | Sun | Stop events counted |
|---|---|---|---|---|---|---|---|---|
| 04:00 | 100% | 97.43% | 99.08% | 96.17% | 97.36% | 96.26% | 95.62% | 3'769 |
| 05:00 | 96.29% | 96.18% | 96.8% | 94.52% | 96.24% | 96.46% | 95.32% | 71'845 |
| 06:00 | 94.44% | 95.31% | 95.78% | 94.03% | 96.06% | 99.08% | 98.7% | 106'023 |
| 07:00 | 94.82% | 93.89% | 95% | 93.72% | 96.01% | 98.95% | 98.19% | 104'335 |
| 08:00 | 92% | 92.8% | 93.22% | 91.73% | 96.46% | 98.59% | 98.94% | 105'620 |
| 09:00 | 94.61% | 95.93% | 95.55% | 95.54% | 96.61% | 97.44% | 96.77% | 106'750 |
| 10:00 | 96.47% | 95.91% | 96.02% | 95.62% | 95.98% | 95.15% | 94.89% | 114'690 |
| 11:00 | 96.49% | 96.64% | 96.11% | 95.26% | 95.08% | 97.48% | 96.37% | 114'934 |
| 12:00 | 96.07% | 94.88% | 95.77% | 94.76% | 94.3% | 96.22% | 97.26% | 114'747 |
| 13:00 | 95.32% | 95.12% | 94.11% | 93.18% | 95.45% | 95.23% | 95.78% | 115'299 |
| 14:00 | 94.7% | 94.97% | 93.78% | 93.57% | 94.77% | 93.8% | 95.39% | 116'359 |
| 15:00 | 93.88% | 93.16% | 93.92% | 91.3% | 92.68% | 92.8% | 96.79% | 117'009 |
| 16:00 | 92.12% | 92.41% | 91.26% | 92.4% | 93.9% | 92.88% | 95.98% | 114'427 |
| 17:00 | 92.33% | 91.72% | 90.47% | 88.93% | 91.76% | 92.91% | 96.57% | 114'476 |
| 18:00 | 94.31% | 93.9% | 90.35% | 90.91% | 90.68% | 92.59% | 97.04% | 114'615 |
| 19:00 | 95.68% | 94.57% | 91.72% | 92.89% | 90.03% | 93.29% | 97.33% | 115'234 |
| 20:00 | 96.37% | 93.5% | 92.86% | 92.18% | 86.72% | 92.62% | 97.25% | 107'813 |
| 21:00 | 95.27% | 91.71% | 94.19% | 93.82% | 90.86% | 92.51% | 96.82% | 90'299 |
| 22:00 | 97.26% | 95.13% | 95.59% | 96.56% | 93.46% | 93.6% | 97.75% | 88'507 |
| 23:00 | 96.7% | 97.31% | 95.38% | 96.34% | 94.87% | 93.21% | 97.72% | 78'363 |
| 00:00 (+1) | 98.25% | 98.78% | 97.21% | 98% | 94.03% | 95.01% | 96.72% | 64'738 |
| 01:00 (+1) | 97.74% | 98.87% | 96.05% | 99.01% | 95.94% | 93.75% | 97.94% | 17'620 |
| 02:00 (+1) | nothing measured | nothing measured | 89.91% | nothing measured | nothing measured | 94.66% | nothing measured | 424 |
| 03:00 (+1) | nothing measured | nothing measured | too few measurements | nothing measured | nothing measured | too few measurements | nothing measured | 254 |
| 04:00 (+1) | nothing measured | nothing measured | too few measurements | nothing measured | nothing measured | nothing measured | nothing measured | 10 |
The outlined cell is that day’s worst hour — it is not the same hour on every day.
Service day, not calendar day: hour 24 is 00:00–00:59 the following morning and still belongs to the day before.
An hour's coverage is the measurement axis alone. The figure at the top of this page takes the worst of three axes — days, journeys, measurements — and so rests on more evidence than these rows do.
About this line
| Line key | 85:3849:051 |
|---|---|
| Label | 51 |
| Operator | Verkehrsbetriebe Zürich INFO+ |
| Mode | tram |
The line registry is built from one week of June 2026. Lines that did not run in that week have no name here — they are measured all the same.
Source and method
Source of the measurements: opentransportdata.swiss (istdaten). How we measure is written up in the methodology.
A figure is published only from 90% coverage upward. Below it there is no figure here — not a greyed-out one, not a dash, none.