Grison, Leprévost and Morgagni – DO YOU BELIEVE IN TRANSIT SCHEMATIC MAPS 2022

Description

This study tested how schematic transit‑map design affects route and transfer choices by 2,482 non‑residents using modified excerpts of the Greater Paris RER D map. Seven line‑form manipulations (orientation, directness, 20%/40% length increases, combinations and acute angles) and three transfer‑node variations were compared to a control. Design had a significant effect: many manipulations increased selection of the eastern (indirect) route, with the 40% length change and combined directness+20% producing the largest shifts. Non‑residents were more sensitive to pronounced changes than previously tested residents, confirming familiarity moderates map influence. For transfer behavior, a visually salient “crossing” modification reversed preference from Juvisy to Viry‑Châtillon, while a subtler “separation” did not. Error rates were high (≈32–36%), largely from misinterpreting transfer depictions. The authors conclude schematic design can shape perceived route attributes and potentially be used to manage passenger flows, but advocate further work on transfer clarity, traveler familiarity effects, and application to dynamic planning tools.