The following Theorem by Nori (Proposition 3.27 of this [paper][2]) is very much in the spirit of what you are looking for. > **Theorem.** Let $D$ and $E$ be curves on > a smooth projective surface $X$. Assume that > > 1. the only singularities of $D$ are nodes; > 2. $D$ and $E$ intersect transversally; > 3. every irreducible component $C$ of $D$ satisfies $C^2 > 2 r(C)$ where > $r(C)$ is the number of singularities of $C$. > > Then the kernel of the natural > morphism $$ \pi_1(X-D-E) > \longrightarrow \pi_1(X-E) $$ is > abelian. In particular if you take an **irreducible** plane curve $C$ having a triple point with distinct tangents as its only singularity then the fundamental group of the complement of its strict transform is abelian (apply Theorem above to $D = \hat C$ and $ E = \emptyset$ ). As Dmitri pointed out, if you drop irreducibility this is no longer true. You might want also to take a look at this [survey][1]. There you will find Nori's Theorem in Section 2.3. [1]: http://arxiv.org/abs/math/0510049 [2]: http://archive.numdam.org/ARCHIVE/ASENS/ASENS_1983_4_16_2/ASENS_1983_4_16_2_305_0/ASENS_1983_4_16_2_305_0.pdf