ndrosen

You know those roadside displays which measure the speed of approaching cars, and show it in lighted letters? Someone who sees that he’s driving forty-three miles per hour where the speed limit is thirty-five just may slow down, for the sake of safety or for fear of getting a ticket.

I was walking on the sidewalk this evening when someone took his car out of its parking spot, and began driving off. There was a speed display which showed the car’s speed rising to thirteen mph, after which it showed a lower number, like three miles per hour, which increased when I began running. There were no moving cars on the road, and I didn’t see any other pedestrians.

Interesting. I walked back the way I had come, and tried again. The display registered, and reached a top number of eight miles per hour when I ran. On my best day, I could never have been an Olympic sprinter, but I am ambulatory, and I am evidently big enough to trigger the radar when there isn’t a moving automobile around to swamp my smaller radar profile.