Sign Measurement and Inventory

Mandli’s RetroView system uses up to three 25,000+ lumen LED lights and six engineer grade cameras to measure the retroreflectivity of signs as the data collection vehicle drives along the roadway. The light sources and cameras are configured to collect signage along the left and right side of the roadways, as well as overhead signs. The vehicle can collect the right-of-way images along with the condition of each sign at highway speeds.

  • Safer and more efficient than hand-held reflectometers
  • Data can be used to develop a replacement plan based on the condition of each individual sign
  • Capable of both day and nighttime collection at highway speeds

Many agencies that currently have existing sign replacement systems implemented utilize the Expected Sign Life method, wherein the expected service life of the sign is based on the time required for the retroreflective material to degrade to the minimum retroreflectivity levels. However, according to the FHWA,

There is little data on how different types of sheeting deteriorate over time in a given climate. It can be a complex process to determine how long signs of a certain sheeting type and color will last in a given region of the country. Also, there are no definitive results on the role that the orientation of the sign face plays in the deterioration of the sign and whether or not signs facing different directions deteriorate at significantly different rates.

Mandli’s RetroView system provides solid data as to the state of each individual sign, allowing for the implementation of a precision sign replacement plan.

Mandli Communications

2655 Research Park Drive  |  Fitchburg  WI  53711 

(42.999149° N,89.427252° W)

(P) 608-835-3500 (P) 608-835-3500
(F) 888-545-2214