Overview
- The Itiner-e dataset and interactive online atlas launched with a Scientific Data paper, offering free public access to an empire-wide road map circa AD 150.
- Researchers report 299,171 kilometers (about 186,000 miles) of roads in 14,769 segments, split into 103,478 kilometers of main routes and 195,693 kilometers of secondary roads.
- Expanded coverage in the Iberian Peninsula, Greece and North Africa, along with terrain-following paths through features like mountain passes, accounts for most of the increase.
- Only about 2.7–3% of the network is located with high precision, roughly 7–7.4% is hypothetical, and the remainder is less precisely placed, providing a confidence map for future fieldwork.
- The team synthesized earlier atlases and databases with archaeological records, milestones, historical itineraries, and modern and historical aerial and satellite imagery to build a single time-slice for AD 150 that can support studies of mobility, administration and disease spread.