T7 SW 10th St — Dongle vs Efficient App

36001 D4 SWZ · paired simultaneous runs · 16–17 Sep 2026 · times in Eastern

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GPS dongle <10 · 10–30 · 30+ mph

Efficient App <10 · 10–30 · 30+ mph

Overlay — both traces on the SW 10th St corridor blue = dongle · orange = app · gray = posted route polygons

Speed vs elapsed time (selected run)

Dongle samples ~every 5 s; app ~every 1 s. Speeds are shown in mph.

Travel time by run (min)

Elapsed time from first to last fix. Primary comparison for the two GPS sources on the same pass.

Path distance by run (mi)

Time stopped by run (% of points < 3 mph)

Share of samples below 3 mph. Shows whether delay / queue time is captured the same way.

Paired-run comparison

Run	Dongle pts	App pts	Dongle travel	App travel	Dongle mi	App mi	Δ mi	Dongle moving mph	App moving mph	Δ mph	Median offset ft	P95 offset ft

Travel time is m:ss. Distances are miles. Moving speed uses points ≥ 5 km/h, shown in mph. Time stopped uses points < 3 mph. Offset is nearest-in-time in feet, not map-matched to the corridor.