You are moving into the passing lane on a Texas two-lane road. According to the manual, what should you do to warn the driver ahead?
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A.
Tap your horn when necessary. Correct
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B.
Flash your high beams three times.
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C.
Wait for eye contact in the driver's mirror.
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D.
Signal with your left arm out the window.
The answer is "Tap your horn when necessary."
The manual's basic passing rules include a horn tap so the driver ahead is not caught off guard. Answer B pulls the headlight flash out of the truck-passing section and applies it to a general two-lane pass, where the horn is what the rule actually names.
The traps in the wrong answers
B. Flash your high beams three times.
A headlight flash belongs to the truck-passing section, not the general basic passing rules. This answer applies the truck-passing headlight-flash from the night-driving rule to the general two-lane pass.
C. Wait for eye contact in the driver's mirror.
The manual does not turn the alert on eye contact; it names the horn. This answer substitutes a merging courtesy (the eye-contact wave) for the audible alert the manual writes into the rule.
D. Signal with your left arm out the window.
A left-arm hand signal can communicate a lane change: the manual lists hand and arm signals alongside turn signal lights. But the passing rule specifically names tapping the horn to alert the driver ahead. This answer comes from a driver whose signaling reflex is the arm out the window, learned first in bicycle safety or picked up as the manual's fallback for a broken turn-signal light.
This question tests your knowledge of Passing in Texas. Source: Texas Driver Manual, "Chapter 6: Signaling, Passing, and Turning (Basic Safety Rules When You Are Passing)," p.38..
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