Citywide Traffic Sensor Network in Nova Gorica, Slovenia 2025-2026 Telraam S2 Dataset

5-minute multimodal traffic counts from a citywide network of Telraam S2 sensors in Nova Gorica, Slovenia, covering 2025-05-15 to 2026-04-01 (646,963 interval rows across 26 monitored road segments). For each segment, the full monitoring window was exported from the Telraam network-subscription dashboard as an Excel (.xlsx) workbook at 15-minute resolution; the bulk download arrived split into two parts (the col1 and col2 folders), organised by year (2025 and 2026). Each workbook has a single sheet with 51 columns: timestamp, directional per-class ("Mode ...") counts for ten daylight classes plus night, five aggregated totals, V85 car speed, eight car-speed distribution bins, and an uptime label. The archive also includes a README, a data dictionary (CSV) and a per-sensor availability table (CSV). All detection and classification occur on-device; no raw images or video are produced. Licence: CC BY-NC 4.0.