EDMONDS, Wash. -- A busy street, speeders, and lots of children heading to school is a bad combination.

What makes it even more dangerous is the fact KIRO Team 7 Investigative Reporter Chris Halsne caught school buses and police cruisers enhancing the problem.

Traffic along this stretch is so bad that the City of Lynnwood recently spent $12,000 installing these new poles and flashers and neon signs. They clearly tell drivers to slow down to 20 miles per hour. Despite that, KIRO Team 7 Investigators went out with a radar gun and repeatedly caught school, police, and city employees ignoring that warning.

Mary Lombardi has been a crossing guard along 44th Street for 21 years. She's seen her share of terrible drivers, telling KIRO-TV, “There have been times I’ve been out in the crosswalk with my flag out and they go right through.”

Lombardi has also seen oblivious parents in a hurry, speeding policeman, and perhaps the most insulting: large, yellow school buses going way too fast.

MORE ON THIS STORY Edmonds School District Letter [pdf file] If you see a speeding school bus, you are asked to call (425) 670-7230.

Don Osborn, who lives near the school crosswalk says, “It’s taking your life in your own hands. I see city buses, public vehicles and police cars (without lights and sirens) just pulling through. It’s frustrating.

Before we started documenting speeders, KIRO Team 7 Investigators did two things: Certified our radar gun and reviewed a bunch of school zone speeding tickets.

Drivers started paying fines when they got caught going 31 miles per hour, at least 11 over the posted limit. That then became our standard.

The first thing we noticed.. Edmonds School District buses repeatedly blew through here faster than 31, all within an hour of school starting or ending. We clocked them repeatedly going 32, 33, 35, 36, even 37 miles per hour. Some of the drivers were even talking on their cell phones.

Edmonds School District Spokesperson Debbie Jakala responded to our investigation saying, “It’s completely unacceptable and there’s no excuse for it. It’s something we’re going to immediately address with our drivers.”

Now, based on our observations and television videotape, the Edmonds School District says it will start retraining drivers. It will even discipline some if necessary.

Jakala added, “Most certainly, the people who should be the most aware of a school speed zone are the people behind the wheel of our yellow buses.”

While watching buses speed, it was hard not to notice a Bothell police car zooming through at 37 miles per hour. Several other Lynnwood police officers, apparently not on an emergency call, sped through the 20 mile per hour zone exceeding 31 as well.

Lynnwood Police Department Spokesperson Shannon Session says that's not unusual. He told KIRO Team 7 Investigative Reporter Chris Halsne, “I understand that would maybe become a concern, that you’d see an officer speeding in a situation like that. Just because they don’t have lights and sirens on, does not mean they’re coming or going from a call.”

Actually, the patrolman going 37 in the 20 zone was not going on a special call. We checked.

Parents, like Don Trautman, say there is no excuse: Safety here means everyone must slow down.

“I have a big interest in it. I have an 11-year-old daughter. That’s a concern of mine,” Trautman told us.

Transportation officials at the Edmonds School District have already sent a letter home with every student regarding buses traveling too fast. It asks parents who see any unsafe behavior from a bus driver. to call a special number. There are now lots more eyes watching these schools zones than just our undercover cameras.

Lynnwood Police tell us they only enforce the 20 mile per hour speed limit in school zones “when children are present”, meaning the kids need to be physically standing or walking along the street. Even if we follow that standard, we witnessed police cruisers on six occasions speeding above posted limits within one hour of school starting or ending.