1) If the lane is too narrow to share safely, i.e., less than about 14 ft. wide, move closer to the its center.
2) Get a mirror.
3) If you think misgearing is slowing you down, find a quiet road or parking lot in which to practice shifting.
4) 10mph is on the slow side of average, and faster than most of us can climb many of the hills we encounter.
5) Explore your options regarding time/day of travel and route.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069