Drivers today face so many distractions getting from A to B. Text messages tempt us, email enchants us, and cellphone rings can seduce us like a siren’s call.

But which distraction is the riskiest? That’s what researchers from the Virginia Tech Transportation Institute set out to answer in a study published in the Proceedings of the National Academy of Sciences.

By analyzing millions of miles of driving data collected over three years, the team found that dialing a phone was the most dangerous distraction, increasing a drivers’ chance of crashing by 12 times.

This was followed by reading or writing, which increased the risk by 10 times. Reaching for an item other than a cellphone came next, increasing the risk by nine times. Texting increased the risk by six times, reaching for a phone increased it by nearly five times, and browsing a phone or reading email nearly tripled a person’s chances of getting into an accident.