Camba. History and construction The Line 5 station was built at grade by Cometro, a subsidiary of Empresas ICA; Instituto del Petróleo Line 5 opened on 30 August 1982, on the first day of the Politécnico–Pantitlán service. The Instituto del Petróleo–Politécnico interstation is long, while the Instituto del Petróleo–Autobuses del Norte section measures . In June 2006, Metro authorities replaced the railroad switches; in 2008, they gave maintenance to the station's roof. The Line 6 station was built underground by Cometro; the Vallejo–Instituto del Petróleo interstation tunnel is 755 m (2,477 ft) long, while the Instituto del Petróleo–Lindavista tunnel measures 1,258 m (4,147 ft). Instituto del Petróleo Line 6 opened on 21 December 1983, on the first day of the El Rosario–Instituto del Petróleo service. On 8 July 1986, the service toward Martín Carrera started. The passenger transfer tunnel that connects both lines has an approximate length of (). The station's pictogram depicts an oil derrick and its name references the Mexican Petroleum Institute, whose headquarters are in the zone; there is an Internet café inside the facilities. Incidents On 19 July 2018, a 16-year-old man was stabbed with a pair of scissors by a 40-year-old man on the station platforms. The injury did not warrant hospitalization and the aggressor was referred to the Public Prosecutor's Office. On 8 November 2020, Instituto del Petróleo, Politécnico, and Lindavista stations were vandalized during feminist demonstrations; walls, screens, handrails, a train, and a mural were damaged and graffitied. Ridership According to the data provided by the authorities since the 2000s, Instituto del Petróleo metro station has been one of the least busy stations of the system's 195 stations. In the last decade, commuters averaged per year between 4,700 and 7,500 daily entrances on Line 5 and between 2,900 and 4,800 daily entrances on Line 6. In 2019, before the impact of the COVID-19 pandemic on public transport, the station's ridership totaled 3,398,142 passengers. For Line 5, the ridership was 2,215,325 passengers (6,069 per day), which was an increase of 40,310 passengers compared to 2018. For Line 6, the station had a ridership of 1,182,817 passengers (3,240 per day), which was a decrease of 40,176 passengers compared to 2018. In 2019, the Line 5 station was the 180th busiest of the system and the line's 10th busiest. The Line 6 station was the 193rd busiest in the system and the line's second-least used. Notes