A safety trailer including first and second platforms, at least one of said first and second platforms having an axle and wheels attached thereto; a plurality of interconnected wall sections positioned between and connected to the first and second platforms, the plurality of wall sections defining a protected work area on a side of the trailer; and wherein each wall section has a lower bracing section comprising a single horizontal beam, two diagonal braces and a plurality of cross-braces, to allow workers in the protected work area to access a portion of the area under the wall section.

A safety trailer including first and second platforms, at least one of said first and second platforms having an axle and wheels attached thereto; a plurality of interconnected wall sections positioned between and connected to the first and second platforms, the plurality of wall sections defining a protected work area on a side of the trailer; and wherein each wall section has first and second end members, each of the first and second end members comprising an outwardly projecting alignment member and an alignment-receiving member, the first and second end members having the alignment and alignment-receiving members positioned in opposing configurations.

The present invention provides a device for displaying hazard indicia, having a stanchion defining a first end and a second end, whereby the first end defines a first cross section that is smaller than a second cross section of the second end; a base adapted to removably receive the second end of the stanchion so as to maintain the stanchion in a vertical position; and a means for allowing the device to be collinearly stacked on top of a second device such that only the second end of the device and the second end of the second device contact.

A safety system is shown including a vehicle, first and second platforms, a barrier positioned between and connected to the first and second platforms defining a protected work area on a side of the trailer; a detachable caboose and wherein the vehicle and caboose are engaged with the first and second platforms, and the vehicle and caboose have braking systems that operate independently.

A safety system is shown including a vehicle, first and second platforms, a barrier positioned between and connected to the first and second platforms defining a protected work area on a side of the trailer; a detachable caboose and wherein the vehicle and caboose are engaged with the first and second platforms, and the vehicle and caboose have braking systems that operate independently.

A safety trailer is shown including first and second platforms, at least one of said first and second platforms having an axle and wheels attached thereto; a plurality of interconnected wall sections positioned between and connected to the first and second platforms, the plurality of wall sections defining a protected work area on a side of the trailer; and wherein each wall section has first and second end members, each of the first and second end members comprising an outwardly projecting alignment member and an alignment-receiving member, the first and second end members having the alignment and alignment-receiving members positioned in opposing configurations.

A roadblock for temporary installation to block traffic and/or as a security precaution includes an elongated casing with two opposing longitudinal side walls. The two side walls join an upper wall. At least one casing support structure is located in the elongated casing and connects to both side walls. Supports for resting on the ground/surface are connected to the lower side of the elongated casing and/or the lower side of the casing support structure. Plural stabilization arms protrude from one of the longitudinal side walls and are detachable.

A roadblock for temporary installation to block traffic and/or as a security precaution includes an elongated casing with two opposing longitudinal side walls. The two side walls join an upper wall. At least one casing support structure is located in the elongated casing and connects to both side walls. Supports for resting on the ground/surface are connected to the lower side of the elongated casing and/or the lower side of the casing support structure. Plural stabilization arms protrude from one of the longitudinal side walls and are detachable.

A safety trailer is shown including first and second platforms, at least one of said first and second platforms having an axle and wheels attached thereto; a plurality of interconnected wall sections positioned between and connected to the first and second platforms, the plurality of wall sections defining a protected work area on a side of the trailer; and wherein the trailer supports a ballast member, the ballast member being positioned near a first side of the trailer and the wall sections near a second, opposing side of the trailer, the ballast member offsetting, at least partially, a weight of the plurality of wall sections.

A safety trailer is shown including first and second platforms, at least one of said first and second platforms having an axle and wheels attached thereto; a plurality of interconnected wall sections positioned between and connected to the first and second platforms, the plurality of wall sections defining a protected work area on a side of the trailer; and wherein the trailer supports a ballast member, the ballast member being positioned near a first side of the trailer and the wall sections near a second, opposing side of the trailer, the ballast member offsetting, at least partially, a weight of the plurality of wall sections.