  At first blush, what appears to be a purely physical question to measure any
velocity: how to measure the velocity on a one-way trip? However, due to the
debates of the clock-synchronization and the successes of Special Relativity
(SR), searching of the possibility of one-way speed of light measurement did
not receive wider attention since the declaration of the constancy of the speed
of light in vacuum by Maxwell's Electrodynamics in 1864. However, our analysis
suggests that the debates of the clock synchronization are insignificant when
one uses a one-way experiment to test the isotropy of the speed of light - the
fundamental postulate of SR. Searching of the possibility of one-way speed of
light to test SR is introduced by reviewing recent one-way tests.
