Cost

Costs to deploy Intersection Collision Warning Systems range from $9,000 to $142,500 depending on number of lanes and if systems are post or overhead mounted.

Three states evaluated intersection collision warning systems to reduce the frequency of crashes by alerting drivers to conflicting vehicles.


06/01/2016


Summary Information

FHWA organized a pooled fund study of 40 States to evaluate low-cost safety strategies as part of its strategic highway safety effort. One of the strategies selected for evaluation in three states was intersection conflict warning systems (ICWSs), which are intended to reduce the frequency of crashes by alerting drivers to conflicting vehicles on adjacent approaches at unsignalized intersections.

System Costs

The following table presents itemized cost data for post-mounted signs for two-lane at two lane intersections and four-lane at two-lane intersections from the Minnesota Department of Transportation. The intersection warning systems included static signs on the major road, blank-out signs on the minor road, micro-loops on the major road, loops or micro-loops on the minor road, controller cabinets, and onsite contractor warranty, which included a 72-h response to address any system malfunction.

Countermeasure
Mobilization
Engineering
Construction
Design Build Oversight
Total
Post-mounted on all approaches for two-lane major approach
~$5,000
$11,807
$75,650
$17,000
$109,457
Post-mounted on all approaches for four-lane major approach
~$5,000
$13,130
$103,833
$17,000
$138,963

The Missouri Department of Transportation provided the following approximate cost and lifespan for a post-mounted ICWS on the major approaches. Annual maintenance costs for mainline warning systems with loops on the minor routes were estimated to be $800 per year. For intersections with mainline detection using probes or microwave and wireless communication, estimated annual maintenance was $3,000 per intersection. Utility costs were an estimated $275 for mainline flashers and $400 for side street flashers annually.

Intersection Type
Installation Type
Cost
Lifespan
Two-lane at two-lane intersectionPost-mounted ICWS on major approach
$25,000 to $33,000
10-year minimum
Four-lane at two-lane intersectionPost-mounted ICWS on minor approaches
~$75,000
10-year minimum

The North Carolina Department of Transportation ICWS cost estimates were provided for each of the installations from 1996 to 2011. The cost estimates were normalized by consumer price index to develop an average cost based on 2014. North Carolina assumed an annual maintenance cost of $500 per year, an operations cost of $125 per year, and a lifespan of 10 years for all installations.

Installation Cost
Condition
Minimum
Mean
Maximum
Overhead on minor only
$20,000
$29,500
$46,000
Overhead on major and minor
$20,000
$49,000
$78,000
Overhead on major only
$13,500
$28,000
$49,000
Post-mounted only two lane
$9,000
$21,600
$49,000
Post-mounted only four lane
$49,000
$117,000
$142,500



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Source

Safety Evaluation of Intersection Conflict Warning Systems

Author: Himes, Scott; Frank Gross; Kimberly Eccles; and Bhagwant Persaud

Published By: USDOT Federal Highway Administration

Prepared by VHB for the USDOT FHWA

Source Date: 06/01/2016

Other Reference Number: Report No. FHWA-HRT-16-035

URL: https://www.fhwa.dot.gov/publications/research/safety/16035/16035.pdf

System Cost

Intersection Collision Warning Systems range from $9,000 to $142,500.

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Keywords

intersection safety, intersection safety warning and collision avoidance, vehicle safety, intersection collision warning systems, ICWS

Cost ID: 2018-00392