Question

You are in the leftmost lane on a one-way street, and are stopped at a red traffic light. The cross street is one-way from right to left. If the way is clear, you may
Proceed straight ahead on a red light.


Turn right on a red light, if no signs prohibit it.


Turn left on a red light, if no signs prohibit it.

Answer 1

You are in the leftmost lane on a one-way street, and are stopped at a red traffic light. The cross street is one-way from right to left. If the way is clear, you may Turn left on a red light, if no signs prohibit it. You cannot pass on the street in front of you, but you can pass in the street on your left side because it is just one way.

Answer 2

You are in the leftmost lane on a one-way street and are stopped at a red traffic light. The cross street is one-way from right to left  If the way is clear, the direction you will you go if no signs prohibit it is left turn. 

Turn left on a red light, if no signs prohibit it. It is allowed from a one-way street onto a one-way street.

Red means stop so even if the way is clear, you should not proceed straight ahead.  You cannot turn right also because the street is one-way from right to left.