If you think texting while driving is dangerous, then you may be shocked to learn that many people do more than just text while driving, they actually browse the web while behind the wheel, and the number of people who do it is on the rise.

A USA Today report cites a study that recently polled nearly 4,000 drivers from the age of 18 and older. The study discovered an alarming amount of people surfing the web while driving, which is known as “webbing.” Among drivers 18-to-29-years old, 48 percent admitted to this practice in 2012, up from 29 percent in 2009.

The trend stems largely from the proliferation and combination of smartphones and social media, even in older age groups. The practice of “webbing” outside of the 18-29 demographic increased from 13 percent in 2009 to 21 percent in 2012.

With the popularity of GPS-enabled smartphones, time spent surfing the web while operating a motor vehicle could also be attributed to using a phone’s navigation app or researching local businesses while on a trip. Regardless of its purpose, this dangerous practice will likely start getting the same sort of attention from safety groups that texting while driving receives now.