...California Driver Handbook, the driver of the vehicles on the left, which, in this case is the motorcycle, shall yield the right of way to the vehicle on the right, which is the L-300 Van. In other words, make the left turn only if one has enough space to complete...

...Intersection When two vehicles enter or approach an intersection from different streets or highways at approximately the same time, the driver of the vehicle on the left must yield the right-of-way to the vehicle on the right. (This rule does not apply to vehicles approaching...