Study ofτDecay and Possibility of Testing Conservation of Vector Current and Current Algebra at Large TimelikeQ2

It is shown that experiments on $\tau$ decay and multipion production in $e^{+}{e}^{-}$ colliding beam can be used to test the hypothesis of conserved vector current, and current algebra at large timelike momentum transfer $Q^2$, independently of the structure of the hadronic weak current coupled to $\tau$.