VTTI's laboratories are housed in three buildings and include facilities dedicated to driver interface development, eye-glance data reduction, lighting research, crash analysis, crash database analysis, pavement research, and traffic simulation.
VTTI's laboratories are housed across several buildings that total approximately 140,000 square feet. These include facilities dedicated to driver interface development, eye-glance data reduction, lighting research, crash analysis, crash database analysis, pavement research, traffic simulation, and warehouse space. In addition, VTTI maintains three SAE level 2 charging stations as well as an SAE level 3 rapid charger for electric vehicles.
Building I originally encompassed more than 29,000 square feet and housed office, laboratory, and garage facilities. An annex was added in 2013 that increased the building's total square footage to almost 54,000. The National Surface Transportation Safety Center for Excellence building was opened in 2006 and comprises 22,000 square feet of office and laboratory space. VTTI's newest building, the Automation Hub, added nearly 15,000 square feet of office and laboratory space adjacent to the Virginia Smart Roads.
Additional laboratories and facilities include VTTI's Center for Injury Biomechanics Sled Lab, support bays, warehouse, and farm structures.
The VTTI-developed DASs have been designed to collect and store large amounts of continuous naturalistic data from the driving environment, including video, vehicle network information, and additional sensor information that can include radar, GPS, and acceleration.
Data collected from various onboard systems are processed and stored in the DAS, which is similar to a “black box” unit found in commercial airplanes. The DAS features are configurable and typically include:
Via its multi-camera system, the DAS can collect information about a range of variables. These cameras record multiple views that can include forward, rearward, and internal views (such as over-the-shoulder, face, and pedal areas). Across the sensor package, data parameters can be customized to include such variables as:
Current iterations of VTTI DASs include the Next Generation (NextGen) DAS, MiniDAS, FlexDAS, and MicroDAS; a specific DAS is typically selected based on the data-collection requirements for a given project.