Initial cost estimate for an anti-icing system on I-90 near Vantage, Washington was $559,500.
The proposed installation consists of a liquid chemical storage tank, a pump, a dispensing system with spray nozzles, an environmental sensing station (ESS), a computerized control system, and a closed circuit television (CCTV) camera for remote viewing. The initial cost estimate was $599,500 (1999). The control system monitors weather and road condition data from the ESS, and automatically activates the dispensing system when predetermined conditions exist. The system also alerts dispatchers and the maintenance supervisor when the anti-icing system is activated. Annual O&M costs were estimated at $32,800 (1999). Costs data used by WSDOT for the analysis are excerpted from the source report and presented below.
The present worth of benefits, present worth of costs, and benefit-to-cost ratio are calculated using the WSDOT Benefit/Cost Worksheet for Collision Reduction. The analysis yielded a benefit-to-cost ratio of 2.36 indicating the viability of the proposed solution.
|Automatic Anti-Icing System (Control system, storage tank, pump, distribution lines, nozzles, and training)|
|Roadway Weather Information System (CPU, instrumentation, tower, and training)|
|Washington State Sales Tax (8%)|
|Power and Communications hookup|
|Design and Construction Engineering (10%)|
|Power and Communications|
A Benefit/Cost Analysis of Intelligent Transportation System Applications for Winter Maintenance
Author: Stowe, Robert
Published By: Paper presented at the 80th Annual Transportation Research Board Meeting. Washington, District of Columbia
Source Date: 7-11 January 2001
Annual O&M costs estimate: $32,800 (1999).
Average User Rating
RWIS, ESS, Environmental Sensor Station, RWIS Station, road monitoring, weather station, environmental sensing station, Fixed Automated Spray Technology (FAST)