Do School Buses Need Two Strobe Lights?

I've always wonder about the strobe lights on top of school buses. These enormous bright yellow vehicles already have many lights and reflectors.

When I started reading this editorial in response to the school bus accident in Adams County, School Bus Safety Issues Raised Again in Accident, I thought it would be a proposal for two strobe lights on each bus.

Rather, it makes a great point: legislation is not always the answer in the wake of tragedy. "[D]rivers must use Tuesday's accident as a reminder of their responsibilities when they get behind the wheel. Simple common sense can save lives."