Now as TikZ 3.0 is here we can use pic
.
\documentclass[tikz,border=5]{standalone}
\tikzset{
pics/carc/.style args={#1:#2:#3}{
code={
\draw[pic actions] (#1:#3) arc(#1:#2:#3);
}
}
}
\begin{document}
\begin{tikzpicture}
\pic{carc=-30:30:2cm};
\draw[thick] (4,0) circle (1 cm) pic[red, -latex]{carc=100:150:1.3cm};
\end{tikzpicture}
\end{document}

Note 1: This question was treated before here How to extend TikZ drawing commands
Note 2: I arrived here from this closed quastion Tikz: Curved parallel arrow around a circle, so I gave the answer here too.
EDIT: Here are some examples how we can use carc
to create logos ;)

\documentclass[varwidth,border=50]{standalone}
\usepackage{tikz}
\tikzset{
pics/carc/.style args={#1:#2:#3}{
code={
\draw[pic actions] (#1:#3) arc(#1:#2:#3);
}
}
}
\begin{document}
\begin{tikzpicture}
% --- RSS
\begin{scope}[xshift=-1.5cm]
\fill[orange, rounded corners=5mm] (-0.5,-0.5) rectangle (3.7,3.7);
\fill[white] (0.5,0.5) circle (0.5);
\draw[white, line width=7mm] (0,0) pic{carc=0:90:1.9} pic{carc=0:90:3};
\end{scope}
% --- Radioactif
\begin{scope}[yshift=-4cm, yellow, line width=1.4cm]
\fill[black] circle (2.5);
\fill circle (.5);
\draw pic{carc=-60:0:1.4} pic{carc=60:120:1.4} pic{carc=180:240:1.4};
\end{scope}
% --- Wi-Fi
\begin{scope}[yshift=-10cm, purple, line width=7mm]
\fill circle (0.5);
\foreach \d in {0,1,2}
\draw pic{carc=135:225:1.55+1.4*\d} pic{carc=-45:45:1.55+1.4*\d};
\pic[line width=3.9cm]{carc=-105:-75:3.1};
\end{scope}
\begin{scope}[yshift=-21cm, blue]
\fill (0,0) circle (0.5);
\foreach \d in {0,1,2}
\draw[line width=7mm, line cap=round] (0,0) pic{carc=45:135:1.55+1.4*\d};
\end{scope}
% --- Goethe Institut
\begin{scope}[yshift=-25cm, xshift=-5cm, green, line width=1.25 mm]
\draw (2.5,2.5) circle (0.5);
\foreach \d in {0,1,...,4}
\draw (1.5,1.5) pic{carc=90:360:0.5+0.25*\d};
\node[anchor=north west, scale=2, black, draw] at (3.2,1.6) {\textsf{GOETHE-INSTITUT}};
\end{scope}
% --- off
\begin{scope}[yshift=-29cm, line width=7mm, line cap=round]
\draw[black] (0,0) pic{carc=130:410:2};
\draw[red] (0,0) -- (0,2.2);
\end{scope}
\end{tikzpicture}
\end{document}