Can unfamiliarity with a gear-shift lever cause a tragedy?

Some car controls have become so perplexing that they might even be dangerous.

There’s been speculation that such confusion might have played a role when a Metro-North commuter train crashed into an SUV at a crossing in Valhalla, New York, on Feb. 3, 2015, killing the SUV driver and five train passengers. The National Transportation Safety Board investigation is still in its early stages and many questions remain unanswered, including how a late-model Mercedes-Benz SUV found itself trapped between the crossing gates with an express train bearing down on it.

While we don’t what happened, two details that emerged from this tragedy caught our attention:

• The driver of the 2011 Mercedes ML 350, Ellen Brody, 49, had just recently bought it, according to news accounts, and the NTSB confirms it was registered in Dec. 2014.

• Stuck between the crossing gates with a train approaching, and with the first gate lowered against her back window, Brody “suddenly pulled forward and as she did so, the train struck the car,” said NTSB board member Robert Sumwalt, summarizing an eyewitness account. In other words, she pulled farther into the path of the train instead of backing up.

We don’t know exactly what happened in that crash, but one thing we do understand is that newer models from Mercedes and several other automakers have an electronic shift lever that can be confusing to use. With a conventional column shifter, for instance, Reverse is traditionally one notch down from Park. But in newer Mercedes vehicles, flicking the electronic column shifter downward engages Drive instead. Reverse is found by flicking the lever upwards.

Check our guide to car safety.