  In attempt to settle the apparent disagreements between different
experimental results, transport data near quantum Hall transitions are
interpreted by identifying two distinct conduction regimes. The ``classical''
regime, dominated by nearest neighbor hopping between localized conducting
puddles, manifests an activated-like resistivity formula, and the quantized
Hall insulator behavior. At very low temperatures $T$, or farther from the
critical point, a crossover occurs to a "quantum" transport regime dominated by
variable range hopping. The latter is characterized by a different
T-dependence, yet the dependence on filling fraction is, coincidentally, hard
to distinguish.
