The Downtown segment of the line was to use the side running configuration. POITRA modified the Engineer provided photograph simply by removing of moving cars and restoring the background and adjusting the pavement markings using traditional digital painting techniques. This provided the base photograph to use for all versions of the simulations.
A fictional BRT vehicle was created by POITRA modelers per the direction of VTA Project Manager. A detailed technical model of VTA's preferred Kinkisharyo LRT vehicle had already been created directly from manufacturers specification sheets. VTA colors and markings were applied as they are on existing vehicles in the VTA fleet.
The POITRA modelers are capable of creating very accurate vehicle models. We are often able to create in model form the vehicle that a transit authority intends to acquire for its system, often at no cost to the project.”
M.P., POITRA Visual
Visual Simulations Project Manager
Modelers at POITRA then created a 3D site model to set the layout for the BRT simulation. This required only the POITRA 3D model VTA BRT vehicles. The site model of the LRT alternative required rails, concrete track bed, LRT catenary system and the POITRA model VTA LRT vehicles. These models were camera matched, lighted, rendered and composited with the base photograph to produce a simulation of each alternative.
POITRA also illustrated the construction stage impacts for the LRT alternative using a combination of 3d elements and digital painting methods. The BRT alternate had virtually no impact at this location. Before establishing POITRA Visual Poitra principals have had actual construction management experience which was of great help in representing construction in progress.
The simulations were used in meetings between VTA and the city, the public and other stakeholders. The simulations also appear in the public EA document.