Excessive boarding and alighting times for trains connecting Setúbal to Lisbon via the 25 de Abril Bridge are cited as a primary cause for constant service delays, leading to passenger protests and complaints from local mayors. Infraestruturas de Portugal (IP) disputes Fertagus's claims that track works are the sole cause, noting that 20% of delays stem from boarding issues, while 32% are linked to maintenance-related speed restrictions. Fertagus maintains that it lacks additional rolling stock to meet increased demand and is awaiting state action to resolve long-term capacity issues.