Methods & Equipment

Data Collection Units (DCU's)

TC²inc uses a proprietary video Data Collection Unit designed by Raven Technologies.

• Energy Efficiency
  Electronic controllers switch the unit on only when needed. (So we can provide more studies, with less travel to recharge the batteries. Fewer trips means smaller travel charges to you !)
• Easy Set-Up
  One person can set-up many DCU's for simultaneous operation. This reduction in travel costs is passed on to you.
• A bird's-eye view
  Our telescoping DCU's provide the best possible viewable angles, so our video manual counts are even more accurate than a street field view.
• Environmentally “Green”
  DCUs significantly decrease travel emissions for projects
• Accuracy in conditions where pneumatic hoses are impractical
  Pneumatic hoses require ‘free flow’ to operate well. Congested and queued locations can be accurately studied with DCUs.

Manual Turning & Intersection Counts

• Economical large quantity TM's are conducted with DCU video.
• Our talented TC²inc technicians live in many cities throughout Washington State, and can be deployed for small quantity counts with local and semi-local travel costs.

Pneumatic Tube Studies

More Accurate Volume-Only Data

With TC²inc Dual Machine Set-Up on multi-lane roads

With the tube set-up that some other companies use, it is 4 times more likely for a vehicle in the furthest lanes to be excluded.

Smart Studies: More Accurate Truck Data

With TC²inc 4-Channel Tube Sets on multi-lane roads

4-Channel sets produce more accurate classification data as well as volume, speed, and gap.

The illustration below shows how a 4-channel study differentiates vehicles more accurately than the 2-channel set. If two cars hit the 2-channel set-up at roughly the same time they may be interpreted as one single multi-axle vehicle rather than two separate vehicles. A 4-channel set precludes this false data.

The chart below shows just how much more accurately a 4-channel set captures volume than a 2-channel set, espceially during the critical peak hours.

For complete details including actual data from two side-by-side studies comparing 4-channel and 2-channel sets see
our 4-Channel Tube Set white paper.