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Originally Posted by mark_l
Arms crossed above the head is the sign used for an Ambulance.
1 Arm held vertically is the sign for a Doctor
Both arms extended horizontally is the sign used to reqest the Rescue Unit.
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Hand signals are GREAT - if used properly!
Most times, signal for a doctor - you're 99% certain to get a rescue unit (unless some doctors car is around). One signal instead of 3!
Also, the straight tow - two arms horizontal action, hands in fists, at WAIST level. Do it too high, and you'll get the Rescue Unit - tres embarrasing!