Roadside Information (RS-I) Variable Speed Limit Sign Adjusted Capital Cost Scatter Plot

A Variable Speed Limit (VSL) sign is a digital traffic sign that allows transportation agencies to change the posted speed limit in real time based on current road, traffic, or weather conditions

The data used to produce this cost plot are sourced from the ITS Sample Unit Costs Database.

These cost data are obtained directly from a variety of sources. Unit cost descriptions have not been altered from their original sources. Variation in naming conventions in descriptions is due to difference in reporting methods across cost reporting entities.