Mapping Software and GIS Glossary


What is VPD?

VPD stands for Volume or Vehicles Per Day and represents the average number of cars that pass through a certain road location in a 24-hour period. VPD gives an indication of how busy a road is. Traffic impact analysis studies are often done to assess the changes in VPD that land use development will cause.

What is VPD: map of highways with theme illustrating vehicles per day per link

Traffic Impact Analysis Software

TransModeler SE is a complete traffic impact study solution in one software package.

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