With the rapid development of urban transportation systems and the increasing
complexity of travel patterns, transport push-pull mobility analysis helps us
understand the fundamental question of "why certain areas generate or attract
traffic flows," thereby guiding urban transport planning decisions. However,
existing studies have not explored the strength and spatial heterogeneity
patterns of transport mobility forces in different urban areas from a traffic
flow perspective. To address this gap, this paper proposes measurement methods
for absolute and relative transport mobility through the lens of push-pull
forces. These methods can evaluate the traffic generation and attraction forces
of each location based on travel flow data between places. The model constructed
in this study follows the assumption that an area with high traffic inflow,
especially from distant locations, indicates strong attraction force;
conversely, if many travelers depart from a location, particularly to distant
destinations, it indicates strong generation force. Using docked public bicycle
trip data from Suzhou, China, we conducted an empirical analysis based on the
proposed methods. The results show that traffic generation and attraction forces
are stronger in both urban suburbs and city centers, with this pattern being
more pronounced in attraction forces. Additionally, districts with both high
attraction and generation forces tend to show spatial clustering, while
districts with low travel demands in both aspects demonstrate less apparent
aggregation. This study provides a novel method for measuring regional transport
mobility forces while offering scientific evidence for developing differentiated
urban transportation strategies and improving shared transit services.