A modular highway warning strip system is formed of a plurality of segments assembled together to create a warning strip assembly having a length, wherein each of the plurality of segments are spaced from adjacent ones of the segments along the warning strip length. The segments are assembled together along a cord disposed along the length of the warning strip assembly. A plurality of spacers are disposed on the cord along the length of the warning strip assembly, between adjacent ones of the segments in order to maintain a spacing between each adjacent segment.

A modular highway warning strip system is formed of a plurality of segments assembled together to create a warning strip assembly having a length, wherein each of the plurality of segments are spaced from adjacent ones of the segments along the warning strip length. The segments are assembled together along a cord disposed along the length of the warning strip assembly. A plurality of spacers are disposed on the cord along the length of the warning strip assembly, between adjacent ones of the segments in order to maintain a spacing between each adjacent segment.

The plastic structural article includes an elongated tubular shell having opposed end sections, a middle section there between and an interior cavity. The interior cavity has a foam core situated therein. The foam core comprises steam expandable polymer beads which when expanded substantially fill the interior cavity. The bead and shell are of a similar plastic composition enabling the articles to be reground and recycled. An apparatus for forming the articles and an associated method of manufacture are also disclosed. A thermal management system includes a panel having a periphery, and a skin having a thermal bond to an in-situ foam core. The panel has a thermal transmittance u-value ranging from 0.1 to 0.17 W/m.sup.2 C.

The plastic structural article includes an elongated tubular shell having opposed end sections, a middle section there between and an interior cavity. The interior cavity has a foam core situated therein. The foam core comprises steam expandable polymer beads which when expanded substantially fill the interior cavity. The bead and shell are of a similar plastic composition enabling the articles to be reground and recycled. An apparatus for forming the articles and an associated method of manufacture are also disclosed. A thermal management system includes a panel having a periphery, and a skin having a thermal bond to an in-situ foam core. The panel has a thermal transmittance u-value ranging from 0.1 to 0.17 W/m.sup.2 C.

The plastic structural article includes an elongated tubular shell having opposed end sections, a middle section there between and an interior cavity. The interior cavity has a foam core situated therein. The foam core comprises steam expandable polymer beads which when expanded substantially fill the interior cavity. The bead and shell are of a similar plastic composition enabling the articles to be reground and recycled. An apparatus for forming the articles and an associated method of manufacture are also disclosed.

The plastic structural article includes an elongated tubular shell having opposed end sections, a middle section there between and an interior cavity. The interior cavity has a foam core situated therein. The foam core comprises steam expandable polymer beads which when expanded substantially fill the interior cavity. The bead and shell are of a similar plastic composition enabling the articles to be reground and recycled. An apparatus for forming the articles and an associated method of manufacture are also disclosed.

A system for retrieving a portable rumble strip from a roadway includes a carrier mountable to a vehicle for transporting retrieved portable rumble strips and a winch mountable to the carrier. The carrier has a support surface configured to support a rumble strip. And the winch includes a rotatable drum and a lead with a major dimension being a length dimension. A proximal end of the lead is connected to the drum such that rotation of the drum winds the lead about the drum. A hook is connected to a distal end of the lead opposite the proximal end. The hook is configured to engage and hold a portable rumble strip as the drum rotates to draw the lead and the hook to the winch, thereby drawing the engaged portable rumble strip into the carrier.

A barrier system includes a plurality of barriers that can be used to form a barrier wall. Each barrier includes a first panel at least partially bounding a cavity and a first leg assembly supporting the first panel in an elevated position. A plurality of spikes are removably disposed on the first panel. A flexible snare is disposed within the cavity of the first panel, the snare being secured to the plurality of spikes so that when the spikes are removed from the first panel, the snare is drawn away from the first panel by the spikes.

A barrier system includes a plurality of barriers that can be used to form a barrier wall. Each barrier includes a first panel at least partially bounding a cavity and a first leg assembly supporting the first panel in an elevated position. A plurality of spikes are removably disposed on the first panel. A flexible snare is disposed within the cavity of the first panel, the snare being secured to the plurality of spikes so that when the spikes are removed from the first panel, the snare is drawn away from the first panel by the spikes.

Methods, systems, and apparatus for controlling a speed regulator are described. A monitor detects a speed of a vehicle. A speed regulator controller configures a speed regulator based on the detected speed, the speed regulator being configurable to extend and retract.