Sensys Stud Trial - Sensys Networks

Sensys Stud Trial
6. Cost Comparison and Compatibility
6.1 Cost Comparison Installation of Detectors
Being an active sensor with electronic components each individual stud costs considerably
more than a loop to supply and install, however savings can be made on traffic control.
3 Lanes
The first example shows a typical installation of a 3 lane site. Due to restriction in working no
closer than 1m from cones, a full motorway closure is required to cut the loops. In this case the
cost of supply and installation of Sensys studs is actually less that installing loops.
For 1 Site, 3 lanes
Stud Installation Cost Qty Total Notes
Stud Supply $ 966.67 6 $ 5,800.02
2 Studs required per lane to
produce speed
Installation $ 200.00 6 $ 1,200.00
Traffic Management $ 300.00 1.5 $ 450.00
Semi static @ $300 per hour.
Assume 15 mins per stud
$ 7,450.02
Loop Installation
Loop Supply and
Install
$ 550.00 3 $ 1,650.00
Traffic Management $ 6,440.00 1 $ 6,440.00
Typical motorway closure cost,
1 on-ramp
$ 8,090.00
4 Lanes
This example shows a typical installation of a 4 lane site. Here a motorway lane closure can be
used and the safety distances maintained. This shows that it is cheaper to install loops. It
should be noted however that cutting these 4 loops would take all night, however installing the
studs would take just 2 hours allowing another site to be done in the same night.
For 1 Site, 4 lanes
Stud Installation Cost Qty Total Notes
Stud Supply $ 966.67 8 $ 7,733.36
2 Studs required per lane to
produce speed
Installation $ 200.00 8 $ 1,600.00
Traffic Management $ 300.00 2 $ 600.00
Semi static @ $300 per hour.
Assume 15 mins per stud
$ 9,933.36
Loop Installation
Loop Supply and
Install
$ 550.00 4 $ 2,200.00
Traffic Management $ 3,250.00 1 $ 3,250.00
Typical motorway closure cost,
1 on-ramp
$ 5,450.00
Commercial in Confidence Page 23