SINGLE FILE - arm and index finger extended straight up

    TURN SIGNAL ON - open and close hand with fingers and thumb extended

SLOW DOWN - arm extended straight out, palm facing down

      DOUBLE FILE - arm with index and middle finger extended straight up

FUEL - arm out to side pointing to tank with finger extended

    SPEED UP - arm extended straight out, palm facing up

HAZARD IN ROADWAY - on the right, point with the right foot; on the left, point with the left hand

       REFRESHMENT STOP - fingers closed, thumb to mouth

YOU LEAD/COME - arm extended upward 45 degrees, palm forward pointing with index finger swing in arc from back to front

     HIGHBEAM - tap on top of helmet with open palm down (also used to indicate law enforcement)

COMFORT STOP - forearm extended, first clenched with short up and down motion

   FOLLOW ME - arm extended straight up from shoulder, palm forward

PULL OFF - arm positioned as for right turn, forearm swung toward shoulder