Getting peoples attention to pull over?
Couple months ago I saw a guy parked that had 2 elec cords between his trailer and his pick up. It turns out second cord was elec cord from his generator to some medical equipment in his trailer. ...
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The "... --- ..." Morse Code SOS signal either with lights or horn is probably the surest way to get someone's attention. Even if they aren't familiar with Morse Code, they can at least tell you're not just signalling because you're ticked off!
