You reach a steady red light where both your street and the cross street carry one-way traffic. What does the Texas manual say about turning left?
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A.
Left turns are prohibited under all circumstances at a steady red.
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B.
Left turns are allowed only if a green arrow for left turns is showing.
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C.
A left turn is permitted after stopping unless a posted sign prohibits it. Correct
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D.
The turn is legal only when the cross street has no oncoming vehicles.
The answer is "A left turn is permitted after stopping unless a posted sign prohibits it."
The manual allows a left turn on red from a one-way street onto a one-way street, unless a posted sign forbids it. Option A is the trap for drivers who remember 'right on red' and generalize the two-way ban on left turns to every intersection.
The traps in the wrong answers
A. Left turns are prohibited under all circumstances at a steady red.
Ignores the one-way-to-one-way exception written directly into the red-light rule. Applies the ordinary two-way ban and forgets that Texas carves out one-way streets specifically.
B. Left turns are allowed only if a green arrow for left turns is showing.
Adds a green-arrow requirement the one-way allowance does not carry. Confuses this permission with the separate protected left-turn setup that does need an arrow.
D. The turn is legal only when the cross street has no oncoming vehicles.
Invents an oncoming-traffic condition; on two one-way streets there is no oncoming direction from the cross street. Imports the yield-to-oncoming rule from left turns on green, which does not fit the one-way case.
This question tests your knowledge of Traffic Lights in Texas. Source: Texas Driver Manual, "Traffic Signals (Steady Red Light (Stop))," p.25..
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