# Accidents on the A1 motorway in Italy > Live situation record from CLSTR: https://clstr.news/situations/accidents-on-the-a1-motorway-in-italy > Updated: 2026-09-03T22:06:00.000Z. Sources: 14. Developments: 4. A series of accidents occurred on Italy’s A1 motorway during late August and early September 2026. On August 24, a multi-vehicle accident near kilometer 344 caused a 7 km traffic jam for motorists traveling toward Firenze between Monte San Savino and Valdarno. On August 31, a two-vehicle collision between Colleferro and Anagni in the direction of Naples resulted in a three-kilometer queue, though no injuries were reported. On September 2, a fatal accident near Ponzano Romano at kilometer 524+500 resulted in the death of a 70-year-old man and left one person critically injured. The incident, which involved smoke on the roadway, led to the temporary closure of the motorway between Orte and the D18 Roma Nord junction, causing congestion of approximately five kilometers. Drivers were advised to use the E45 and SS2 Cassia as alternative routes. On September 3, a three-car accident on the A1 Roma-Napoli motorway caused significant disruptions in the southbound direction between San Cesareo and Anagni-Fiuggi. The collision occurred near the junction for the Roma Sud branch and Anagni, restricting traffic to two lanes and creating an 11-kilometer queue. Commuters faced delays of approximately 58 minutes, with travel times through the affected section reaching 74 minutes. ## Claims - Cameras from Autostrade per l'Italia detected smoke on the roadway near the impact site. (corroborated by 2 sources) - A 70-year-old man died at the scene despite resuscitation attempts. (corroborated by 2 sources) - One person was critically injured and transported to the hospital. (corroborated by 2 sources) - The accident caused traffic jams of approximately five kilometers. (corroborated by 2 sources) - The accident occurred at kilometer 524+500 in Ponzano Romano on the A1 motorway. (corroborated by 2 sources) ## Timeline ### 2026-09-03: A1 Roma-Napoli motorway accident causes 11km traffic jam A three-car accident on the A1 Roma-Napoli motorway has caused an 11-kilometer traffic jam, leading to delays of nearly an hour between San Cesareo and Anagni. 4 sources. https://clstr.news/cluster/a1-roma-napoli-motorway-accident-causes-11km-traffic-jam ### 2026-09-02: A1 motorway accident near Ponzano Romano leaves one dead and one critically injured A fatal accident on the A1 motorway near Ponzano Romano has killed a 70-year-old man and critically injured another, causing major traffic closures and five-kilometer queues. 5 sources. https://clstr.news/cluster/a1-motorway-accident-near-ponzano-romano-leaves-one-dead-and-one-critically-injured ### 2026-08-31: A1 motorway accident causes traffic delays near Anagni A two-vehicle collision on the A1 motorway between Colleferro and Anagni caused three kilometers of traffic delays on Monday, though no injuries were reported. 3 sources. https://clstr.news/cluster/a1-motorway-accident-causes-traffic-delays-near-anagni ### 2026-08-24: A1 motorway accident causes 7 km traffic jam toward Firenze A multi-vehicle accident on the A1 motorway near kilometer 344 has caused a 7 km traffic jam between Monte San Savino and Valdarno, significantly delaying travel toward Firenze. 2 sources. https://clstr.news/cluster/a1-motorway-accident-causes-7-km-traffic-jam-toward-firenze --- Cite as: Accidents on the A1 motorway in Italy. CLSTR, https://clstr.news/situations/accidents-on-the-a1-motorway-in-italy