I remember back in the day some guy was selling the strobe light devices that emergency vehicles use on some nefarious site and it came with a warning that its

I remember back in the day some guy was selling the strobe light devices that emergency vehicles use on some nefarious site and it came with a warning that its a felony to even possess one of these and you should only use it for "research" purposes wink wink. The funny part of his ad was him saying its still dangerous AF to just switch a light to green so quickly, it has the very real potential to cause accidents which back in the early aughts when this was online, I could totally believe him. You don't need a light to change to green in all directions, using this and then thinking you're good to go and you blow through the intersection while someone is trying to beat a yellow light in the opposite direction could be disastrous.