On the night of April 30, 2026, São Paulo's state highways accumulated 634.7 km of simultaneous slowdowns, according to Artesp data from Waze. The capital hit a peak of 1,231 km of congestion at 5:30 p.m., dropping to 718 km around 7 p.m. Heavy traffic was driven by the exodus for the extended Labor Day holiday on May 1.
São Paulo's outbound traffic on the eve of Labor Day caused heavy congestion on Thursday night (30). Artesp data from Waze showed 634.7 km of slowdowns around 7:20 p.m., across 80 stretches, with nearly 26 hours of accumulated delay.
Rodovia Anhanguera (SP-330) led with 56 km of congestion and 7h34 of delay, heading to Campinas, Ribeirão Preto, and the interior. Rodovias dos Bandeirantes (SP-348) and Castelo Branco (SP-280) also had heavily loaded stretches, the main outbound corridors from the capital during extended holidays.
Toward the coast, Rodovia dos Imigrantes saw slow traffic between km 32 and 43, plus holdups at km 47-49 and 65-70. Rodovia Anchieta had jams at km 33-42 and 54-56 toward the coast, and slowdowns at km 59-63 inbound. To the interior, Rodovia Raposo Tavares built up over 20 km of queues from km 12 to 33 around 6:30 p.m., while Castelo Branco congested at km 20-26 and 32-36.
In the city, CET's slowdown index peaked at 1,231 km at 5:30 p.m., after surpassing 900 km early afternoon from 400 km in the morning. By 7 p.m., it fell to 718 km, still above average.
