Beginning in 2010, the Indy Racing League initiated the ICONIC plan (Innovative, Competitive, Open-wheel, New, Industry-relevant, Cost-effective) and evaluated proposals from BAT Engineering, DeltaWing, Lola, Swift, and Dallara. On 14 July 2010 Dallara's design was selected. The regulations introduced a modular approach: teams purchased a standardised safety cell capped at $349,000 and fitted manufacturer-supplied aerodynamic packages limited to $70,000. Assembly was carried out at a new Dallara facility in Speedway, Indiana.
Dan Wheldon conducted the first official test at Mid-Ohio Sports Car Course in August 2011. Following his fatal crash on 16 October 2011, Dallara renamed the chassis the DW12 — echoing Ligier's historical practice of naming cars to honour deceased drivers.
The DW12 made its racing debut at the 2012 Honda Grand Prix of St. Petersburg, where Will Power claimed pole and Hélio Castroneves won the race. All teams initially used a universal Dallara aerodynamic kit. The car's Indianapolis 500 debut delivered remarkable spectacle, with 136 lead changes across the first three appearances at the venue, including a track record 68 lead changes in the 2013 race.
From 2015, Honda and Chevrolet introduced manufacturer-specific aerodynamic packages developed with Wirth Research and Pratt & Miller respectively. Chevrolet initially dominated, winning all but six races in 2015. Three Chevrolet cars suffered dramatic flip incidents at the 2015 Indianapolis 500, prompting safety evaluations; both manufacturers subsequently modified their packages and domed skids were introduced in 2016. Zylon bodywork tethers were added following Justin Wilson's 2015 death caused by debris from a competitor's car.
In March 2017 IndyCar announced a comprehensive redesign — the UAK-18 — retaining the original safety cell but replacing the aerodynamic package. Rear-wheel guards were removed, and the package emphasised ground-effect downforce over wing-generated load. Scott Dixon tested the aeroscreen cockpit protection device at ISM Raceway in February 2018; an interim Advanced Frontal Protection device debuted at the 2019 Indianapolis 500, and the Red Bull Advanced Technologies aeroscreen entered full service for 2020. The platform was originally scheduled for retirement after 2023 but a hybrid formula was delayed; instead, a 60-horsepower electric motor coupled to a 320 kWh capacitor debuted during the 2024 Honda Indy 200 at Mid-Ohio. A comprehensive new formula has been deferred to 2028.
The DW12 has been involved in one IndyCar fatality during competition. At the 2015 ABC Supply 500 at Pocono Raceway, Justin Wilson sustained fatal head injuries after being struck by the nose cone detached from Sage Karam's crashed car — the most recent fatality in IndyCar Series history through the 2025 season.
This article is based solely on the supplied corpus. No external sources were consulted; claims that could not be substantiated against the corpus were omitted under the drop-the-claim rule.
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