Colorado, United States
Summary Information
In Colorado, a Truck Tip-Over Warning System was deployed on I-70 east bound just outside Idaho Springs to help prevent rollover crashes on sharp curves. The system consisted of two piezo weigh-in-motion (WIM) devices, traffic detectors, four fiber optic message signs, computer processing equipment and associated software, and a controller cabinet.
When vehicles were detected exceeding the maximum safe speed for their weight category, the warning system was activated and messages were displayed on otherwise blanked-out roadside message signs.
The low bid for the project was $446,687 (2002). The equipment list of the major components identified in the bid tabulation is presented in the table below.
EQUIPMENT LIST - MAJOR COMPONENTS OF BID TAB*
|
COST
|
---|---|
Truck Tip Over Warning System (Ea.) (WIM) |
$278,611
|
Blank Out Sign (Fiber Optic) (4 Ea.x 8,788 $/ea.) |
$35,112
|
Steel Sign Post (W 6x12) (39.5 lf x 23 $/lf) |
$908
|
Steel Sign Post (W 8x18) (33 lf x 32 $/lf) |
$891
|
Concrete Footing (Type 3) (3 ea x 976 $/ea) |
$2,928
|
Concrete Footing (Type 1) (2 ea x 941 $/ea) |
$1,882
|
*Colorado DOT CoTrip, "Design Guidelines for Including ITS in Projects"
CVO/Freight and ITS Session (Presentation)
System Cost: $446,687 (2002).