Road traffic kills significant numbers of primates in fragmented tropical habitats, disrupting social groups and requiring infrastructure interventions to reconnect populations.
Primates killed or injured on roads experience traumatic deaths and injuries. Infants are sometimes found clinging to dead mothers, experiencing both physical and psychological trauma. Social disruption from road mortality affects entire troops, as primates maintain complex social relationships and hierarchies. Rope bridge installations reduce mortality and allow gene flow, directly improving individual welfare and population health.