Simulations · SUMO 1.22.0

Berlin-Mitte, seed 408

Original scenario demand; only private-car departures between 07:00 and 08:00 are scaled.

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Reference demand · scale 1.000 · seed 408

16126 / 16126 arrived by 09:00.

vehicles on the network (all)
sampled cars drawn
mean speed of sample, km/h
sampled cars below 2 km/h

GPT-OSS-scaled demand · scale 0.823 · seed 408

12685 / 13250 arrived by 09:00, 553 still on the network, 12 never inserted.

vehicles on the network (all)
sampled cars drawn
mean speed of sample, km/h
sampled cars below 2 km/h

moving, above 30 km/hslow, 2 to 30 km/hstopped, below 2 km/hbus

All demand variants

Demand variantscaleCohort cars per seedTime loss, completed trips (s)Elapsed, all scheduled cars (s)Unfinished, all seedsCompletion, minimum
Reference demand1.00016126-16126113.9398.30100.0%
Constant-only fallback0.63210174-10231102.4386.20100.0%
Gemma-scaled demand0.68711069-11116103.9387.90100.0%
Llama-scaled demand1.16418769-18826123.2419.015799.2%
GPT-OSS-scaled demand0.82313250-13308107.1450.656595.7%

Means over the seeds listed per variant. Time loss counts completed cohort trips only; elapsed time counts every scheduled car to its arrival or to the 09:00 horizon, so it does not hide unfinished trips.

Where these runs come from

BeST Berlin SUMO Traffic scenario, Mitte route subset (Schrab et al., CC BY 4.0); SUMO 1.22.0

15% of vehicles report their position every 30 s (SUMO floating-car output, geographic coordinates). time-to-teleport -1, ignore-junction-blocker 20, step 1 s, 06:30 to 09:00.

These are sensitivity runs on technical scenarios, not calibrated city forecasts. Every number on these pages comes from the recorded SUMO output; the site adds nothing.

Download the recorded positions (JSON)