Roadway barrier apparatus comprising, in combination: a first roadway barrier module having a double-ended first module body and upper and lower first module connector brackets (16, 18) extending from each end thereof, said upper and lower first module connector brackets spaced a fixed vertical distance from one another and defining aligned first module bracket apertures; a second roadway barrier module having a double-ended second module body and upper and lower second module connector brackets (16, 18) extending from each end thereof, said upper and lower second module connector brackets spaced from one another and defining aligned second module bracket apertures, the first module body and the second module body being disposed with opposed ends thereof spaced from one another and the upper first and second module connector brackets thereof in overlapping relationship and the lower first and second module connector brackets in overlapping relationship with the first module bracket apertures and the second module bracket apertures aligned; a spring biased hinge pusher member slidably connected to the first module body and extending toward the second module body; and a pivot pin positioned between said first module body and said second module body in said aligned apertures of said first and second module body connector brackets and extending through said upper and lower first and second module connector brackets, said pivot pin having a circumferentially extending groove, said pivot pin including a pivot pin top portion above the topmost upper module connector bracket and said spring biased hinge pusher member positioned in said circumferentially extending groove to limit upward movement of said pivot pin and prevent disengagement of said pivot pin from said overlapping upper and lower connector brackets due to ratcheting effect caused by relative motion between the first and second roadway barrier modules. a first roadway barrier module having a double-ended first module body and upper and lower first module connector brackets (16, 18) extending from each end thereof, said upper and lower first module connector brackets spaced a fixed vertical distance from one another and defining aligned first module bracket apertures; a second roadway barrier module having a double-ended second module body and upper and lower second module connector brackets (16, 18) extending from each end thereof, said upper and lower second module connector brackets spaced from one another and defining aligned second module bracket apertures, the first module body and the second module body being disposed with opposed ends thereof spaced from one another and the upper first and second module connector brackets thereof in overlapping relationship and the lower first and second module connector brackets in overlapping relationship with the first module bracket apertures and the second module bracket apertures aligned; a spring biased hinge pusher member slidably connected to the first module body and extending toward the second module body; and a pivot pin positioned between said first module body and said second module body in said aligned apertures of said first and second module body connector brackets and extending through said upper and lower first and second module connector brackets, said pivot pin having a circumferentially extending groove, said pivot pin including a pivot pin top portion above the topmost upper module connector bracket and said spring biased hinge pusher member positioned in said circumferentially extending groove to limit upward movement of said pivot pin and prevent disengagement of said pivot pin from said overlapping upper and lower connector brackets due to ratcheting effect caused by relative motion between the first and second roadway barrier modules.