Road Sign Math

Dave Oosterhuis and his wife Phoebe continue their journey to Iowa City for homecoming weekend and along the way come across more mathematically significant roadsigns. This time they found math in the sign notifying them of the 137 households of Brandon, Iowa.

This sign has an unmistakeable similarity to Three Types, the very first sign ever posted on Road Sign Math.

This sign tries to obsure it’s mathematical relationship by putting numbers far away from each other, and even trying to hide one number inside the road indicator. Remember that because of rule #4 the “D48″ is used as 48.

This sign was found on I-380 southbound approaching exit 49. The GPS coordinates are approximately N42 19 31.5 W91 59 36.4. See sign on map!