The third and more advanced TSD was delivered to ANAS in Italy

Greenwood Engineering has constructed the third Traffic Speed Deflectometer on behalf of the Italian company (ANAS) S.p.A - Centro Sperimentale Stradale. The new TSD has more lasers than the previously two TSD's, owned by the Danish Road Institute (DRI) and Highways Agency (HA) in the UK. The increased number of lasers offers the possibility to make a more advanced description of the bearing capacity of the road, for example distinguishment between different pavement layers.

The new TSD also includes a Greenwood LaserProf and Right-of-Way imaging system. The device is therefore taking advantage of all the features in the Greenwood multifunction hardware and software package, where it is possible to measure and see all subsystems in a synchronized way. The new device includes a number of improvements based on experiences obtained with the two existing TSD's.

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The Traffic Speed Deflectometer is patented under the following patent numbers: 819196 in Europe, 694347 in Australia, 6119353 in USA and 3850875/3851342 in Japan.