When a person enters into or passes through any county in this state in obedience to a summons issued pursuant to section 169-302 (2) or when returning from testifying under the summons, he shall not be subject to arrest or the service of process, civil or criminal, in connection with matters which arose before his entrance into said county in response to the summons.
Source: L. 85: Entire part added, p. 627, § 1, effective April 24.