Blue, green cars are allowed. Red, yellow, and white are prohibited.
Blue, red, green cars are allowed. Yellow, white are forbidden.✓Respuesta correcta
Explicación
The official exam accepts the blue, red, and green cars as allowed and requires the yellow and white cars to stop. The controller's sideways-extended arms open movement ahead or toward the right from his sides and stop traffic at his chest and back, but the diagonal road approaches do not identify which vehicles occupy those directions.
