The Speed Zapper is pointing at a stretch of Grover Street where one woman is worried that a child might be injured or killed if the traffic doesn't slow down.
Outside of St. Thomas More School, at 48th and Grover, Holly Lacy talked of traffic and told us, "it's horrible."
The speed limit is 30 mph. It drops to 25 during the time that Lacy walks her kids to school but she says many drivers aren't paying attention to either of those numbers.
"Every day, I'm afraid my kids are going to get hit. Every day, because the traffic is horrible."
We took the Channel Six Speed Zapper out for a closer look and it didn't take us long to see why Lacy is worried. We quickly clocked a 42, a 38 and a 39. When the School Zone limits are active, those are way over the speed limit.
Neighbors say one reason people get going so fast on that stretch of road is because they roll through the stop sign at 48th and Grover. There's extra danger when rain slickens the street.
Holly's mother-in-law, Pat Lacy, says reckless drivers make things worse.
"Somebody has even come across the line and passed me," she said. "And it's pretty dangerous because there's kids along here."
During the time we spent with an eye (and our Zapper) on the traffic flow, we found the average speed was 28 miles-per-hour. That 42 mph was the highest speed we clocked.
Our Speed Zapper findings are shared with neighborhood associations and police.