(Bloomberg) -- Ford Motor Co. added more structuralprotection to the 2016 F-150 SuperCab to improve the pickup’ssafety rating to “good” from “marginal” in the latest crash testsby an insurer group.

The Insurance Institute forHighway Safety tested the F-150 SuperCab as well as two bodystyles of pickups each from General Motors Co., Toyota Motor Corp.and Fiat Chrysler Automobiles NA. Only the Ford truck received a“good” rating in a 40 miles-per-hour crash designed to mimic apartial head-on collision, according to an IIHS statementTuesday.

Top Safety Pick

The improved test score for the F-150 SuperCab helped it earn thegroup’s Top Safety Pick designation, joining the F-150 SuperCrewversion. Full-size pickups are among the top selling and mostprofitable vehicles in the U.S., and safety ratings are critical tothe contractors and ranchers who buy them.

“We commend Ford for taking last year’s test results to heartand upgrading protection for the SuperCab occupants in smalloverlap crashes,” Raul Arbelaez, vice president of the IIHS VehicleResearch Center, said in a statement. “Ford is leading the wayamong large pickup manufacturers when it comes to protecting peoplein a range of crashes.”

The F-150 SuperCab is an extended-cab model, with two smallerrear doors and compact second-row seats. The SuperCrew is acrew-cab model, with full-size rear doors and second-row seats.

In the so-called small overlap crash test, GM’s ChevroletSilverado 1500 Double Cab and GMC Sierra 1500 Double Cab got“acceptable” ratings, as did Toyota’s Tundra Double Cab. Crew Cabversions of the two GM models and the Toyota truck were rated“marginal,” as were FCA’s Ram 1500 Crew Cab and 1500 Quad Cab.

“No single test determines overall, real-world vehicle safety,”Lisa Barrow, a Fiat Chrysler spokeswoman, said in an e-mail. “EveryFCA vehicle meets or exceeds all applicable motor-vehicle safetystandards.”

Toyota is “evaluating the test results with the goal of findingnew ways to continuously improve the performance of Toyota trucksand to further enhance the safety of out vehicles,” Cindy Knight, aspokeswoman for the company, said in an e-mail. The Tundra modelsmeet or exceed all federal safety standards, she said.

GM spokesman Tom Wilkerson declined to comment about the testscores.

Extra support

After getting a marginal rating on its 2015 F-150 SuperCab, Fordadded extra safety supports already found in its larger SuperCrewversion. The company said it reinforced the rocker panels and addedwheel blockers and nylon hinge pillars to the F-150 SuperCab tobetter control crash forces.

Related: Ford says SUVs to become 40% of the U.S. automarket by 2020

“We spent thousands of hours engineering, designing anddeveloping multiple safety features that work together in the eventof an accident” Raj Nair, Ford global product development chief,said in a statement.

In 2012, IIHS began conducting the small overlap test to measurehow vehicles perform in a crash designed to simulate an oncomingcar drifting over the center line or running into a tree ortelephone pole.

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