The Insurance Institute for Highway Safety (IIHS) hasn't yet rated the 2014 Murano, but rates the identical 2013 model "good" in front, side, and head-restraint tests, but with a somewhat troubling "marginal" score in roof-strength testing.
Last year, Nissan added several new safety technologies to the Murano, including Moving Object Detection, Blind Spot Warning, and Lane Departure Warning. All of those features are included with the Platinum Edition and SL Navigation Package models. These features should help with the visibility issues incurred by the Murano's body shape.
Standard safety equipment found throughout the Murano range includes: anti-lock brakes, electronic stability control, front and side-impact airbags, side-curtain airbags, and active front head restraints.
For models not equipped with the safety technologies listed above aimed at ameliorating the issue, rear three-quarters visibility can be obscured somewhat by the sloping roofline and thick rear roof support.