Cost

Total cost of Phoenix, Arizona-based testbed facility used to identify top vehicle detection technologies estimated to be $566,000.


October 2007
Phoenix; Arizona; United States


Summary Information

Limitations in current traffic monitoring abilities are an ongoing negative issue for the Arizona Department of Transportation (ADOT) and for its customers in both urban and rural areas. In this research project, Texas Transportation Institute (TTI) performed a state-of-the-practice review that intended to assist the ADOT and other Arizona transportation agencies in identifying the most important technologies for detecting vehicles and determining traffic volume, speed, and lane occupancy. Their research aimed to assist these transportation agencies in making informed decisions so that they can invest wisely. The scope of this project required the development of a design for a detector testbed facility, which ADOT proposed to develop in the Phoenix area in the near future.

The research objectives were to:
  • Gather information on the current vehicle detection systems used in Arizona.
  • Identify the most promising vehicle detection technologies to meet the needs of ADOT and other Arizona agencies.
  • Identify candidate test sites, develop preliminary site design, and develop field test evaluation plan.
  • Develop a detailed design of the detection testbed on the selected freeway segment.
Program Budget:

The initial cost of the testbed included detectors sufficient to ultimately cover eight lanes in the westbound direction (there were seven lanes at the start of the study) and six lanes in the eastbound direction. Besides the detectors, the total cost estimate includes a 12 ft by 12 ft node building, three equipment cabinets, inductive loops for the baseline system, conduit, and boring. The total cost of the facility is estimated to be approximately $566,000. Some components were provided by ADOT at no cost to the project. However, all proposed traffic detector systems evaluated were included in the budget estimate. Other major cost elements included infrastructure, communications, detector mountings, node building, design package, construction management, and contingency.

Anticipated initial testbed costs are shown in the table below:

Description
Unit
Qty Ph1
Qty Ph2
Unit Cost ($)
Phase 1 ($)
Phase 2 ($)
Total Cost ($)
8 ft chain link fence, 10' x 10'
LF
40
0
12.95
518.14
-
518.14
Pedestrian gate (4'X 6') (Barb top)
EA
1
0
355.00
355.00
-
355.00
Concrete pad, 12' x 12'
SF
144
0
34.73
5,001.12
-
5,001.12
Lightning rods and cable
EA
1
0
250.00
250.00
-
250.00
Hardware firewall
EA
1
0
650.00
650.00
-
650.00
Industrial computers
EA
0
0
2,500.00
-
-
-
Weather station
EA
0
1
5,000.00
-
5,000.00
5,000.00
Network Ethernet hubs (high temperature)
EA
1
1
400.00
400.00
-
400.00
Direct burial Ethernet cable
LF
0
525
0.31
162.75
-
162.75
Barriers and crash cushions
LF
0
0
-
-
-
-
Roadway bore and 4" conduit
LF
270
236
63.00
17,010.00
14,868.00
31,878.00
2' x 4' pullboxes (use ADOT #7 with extension)
EA
6
5
1,500.00
-
-
-
3' x 5' pullboxes (use ADOT #9 pullbox)
EA
5
1
3,400.00
17,000.00
3,400.00
20,400.00
Install pullboxes (#7)
Lump
1
0
8,000.00
5,000.00
3,000.00
8,000.00
Surge protector for power service
EA
1
0
150.00
150.00
-
150.00
Peek ADR-6000 (8 lanes WB and 6 lanes EB)
EA
1
1
35,000.00
45,000.00
35,000.00
80,000.00
Loop installation for Peek ADR-6000
Lump
1
1
3,000.00
24,000.00
18,000.00
42,000.00
Traffic Control for Installing ADR-6000 loops
LA
8
6
2,000.00
16,000.00
12,000.00
28,000.00
SmartSensor SS-125 vehicle detector
EA
1
1
8,000.00
8,000.00
8,000.00
16,000.00
Autoscope Solo Pro
EA
1
1
6,500.00
6,500.00
6,500.00
13,000.00
Sensys Networks mag. & epoxy (14 lanes, 2/la)
EA
16
12
465.00
7,440.00
5,580.00
13,020.00
Sensys Networks Access Point & hardware
EA
1
1
3,300.00
3,300.00
3,300.00
6,600.00
GTT (3M), detector cards (all lanes)
Lump
1
1
-
17,170.40
12,877.00
30,048.20
GTT (3M) bore (initiate from median)
LF
232
184
50.00
11,600.00
9,200.00
20,800.00
Pole structure 40' to be provided by ADOT
EA
1
1
20,000.00
-
-
-
Pole structure 40' to be provided by ADOT
EA
1
1
3,000.00
3,000.00
3,000.00
6,000.00
4" PVC conduit (pull box interconnect, etc)
LF
302
178
28.00
8,456.00
4,984.00
13,440.00
1" PVC conduit (for fiber connection)
LF
200
0
18.00
3,600.00
-
3,600.00
3" PVC for pull box interconnections, power, coaxial
197
198
25.00
4,925.00
4,950.00
9,875.00
3" steel conduit for sign bridge
LF
98
78
93.00
9,114.00
7,254.00
16,368.00
Equipment cabinets, large (Type 341) by ADOT
EA
3
1
8,000.00
-
-
-
Cabinet foundations
EA
3
1
2,000.00
6,000.00
2,000.00
8,000.00
Equipment cabinets, small (Type 343) by ADOT
EA
2
1
2,000.00
-
-
-
Node building (small)
EA
1
0
32,000.00
32,000.00
32,000.00
Subtotal
252,602.41
158,913.80
411,516.21
Bid package (10% of Subtotal)
Lump
1
25,260.24
15,891.38
41,151.62
Construction management (15% of Subtotal)
Lump
1
37,890.36
23,837.07
61,727.43
Grand Subtotal
315,753.01
198,642.25
514,395,26
Contingency (10%)
31,575.30
19,864.23
51,439.53
Grand Total
347,328.31
218,506.48
565,834.79



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Source

State of the Art Evaluation of Traffic Detection and Monitoring Systems, Volume I - Phases A & B: Design

Source Date: October 2007

URL: https://rosap.ntl.bts.gov/view/dot/16437

System Cost

Establishing a vehicle detector testbed (in 2007 dollars): $566,000.

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Related Unit Cost Subsystems

Roadside Detection (RS-D)

Keywords

CCTV, closed circuit television cameras, road monitoring, sensors, vehicle detector, traffic detection, traffic monitoring, congestion monitoring, vehicle detector testbed

Cost ID: 2014-00313