Which position is NOT recommended for crossing railroad tracks?

Answer: D — At a 90 degree angle

When crossing railroad tracks, the recommended position for a motorcycle is typically to approach the tracks at a 45-degree angle or perpendicular to the tracks. This positioning helps the rider maintain better control of the motorcycle and reduces the risk of slipping or losing balance due to track features. Crossing at a 90-degree angle is not advised because it can sometimes cause the motorcycle to be more affected by the rails themselves, especially if the surface is uneven or if there is debris around the track area. Riding parallel to the road is also less effective since it increases the chance of getting caught in the tracks, which can lead to a dangerous situation. Ultimately, the goal is to ensure a safe and stable crossing, which is best achieved when the motorcycle is positioned appropriately relative to the tracks to avoid hazards and maintain control.