A traffic barrier structure includes posts fixedly installed at the median or roadside of the road, guiderail units composed of guiderails horizontally connected in series between the posts and each having a longitudinal slot, a rail holder installed in the guiderail and having a slot holder piece closely engaged against the slot in the guiderail and a deformation-resistant piece extending from the slot holder piece, closely conforming to a portion of an inner curved portion of the guiderail, to prevent deformation of the guiderails and enlargement of the slots when shock is applied the guiderails, and a rail connector inserted into respective connection part of adjacent guiderails to longitudinally connect the adjacent guiderails.

Apparatus for absorbing energy when impacted by a vehicle includes guardrail forming structure for folding a guardrail including a pipe through which the guardrail passes and an elongated ramp-like guardrail engagement member in the pipe which cooperates with the pipe to apply compressive forces to the guardrail and fold the guardrail.

Implementations of a visual cue system for conveying road state data to one or more vehicles traveling on a roadway can include a set of visual cue units that receive road state data and selectively issue a visual cue based on the road state data, at least one visual cue unit including a data processing unit configured to process the road state data and determine a light pattern based on a set of light pattern generation rules, and a light pattern display that selectively issues at least a portion of the light pattern to the one or more vehicles traveling on the roadway.

A frontal-impact crash barrier (1) for use in automobile or motorcycle racing circuits, comprising a plurality of impact-absorbing units (2) arranged in reciprocal contact, each in turn comprising: a longitudinal body (3) having an external lateral surface (15), which is hollow and which is arranged vertically; and a plurality of annular elements (4) which are inserted along the longitudinal body (3) so as to externally embrace the longitudinal body (3) and which are stacked on one another so as to enclose the longitudinal body (3) so that the external lateral surface (15) of the longitudinal body (3) is entirely facing the plurality of annular elements (4). The longitudinal body (3) of each impact-absorbing unit (2) can be made of metal. Each transversal section of the longitudinal body (3) of each impact-absorbing unit (2) has a thickness forming a polygon having five sides, or six sides or seven sides.

According to a particular embodiment, an end treatment for a guardrail safety system includes a terminal portion of a guardrail beam comprising a downstream end and upstream end, a first tension cable coupled to an upstream end of the terminal portion. an extruder configured to receive at least a portion of the guardrail beam and at least a portion of the first tension cable, and a terminal support post installed adjacent the roadway at an upstream end of the terminal portion of the guardrail beam. The extruder includes a narrowing throat providing a channel in which at least a portion of the guardrail beam is disposed. The narrowing throat is configured to flatten the guardrail beam in response to a collision with a vehicle moving the extruder in a downstream direction along the guardrail beam. The terminal support post coupled to an upstream end of the first tension cable.

A roadside crash barrier configured for deflecting errant vehicles towards the road. The barrier comprising at least one tensioned flexible strap comprising a planar face facing the road in use to aid in reducing the chances of injury to motorcyclists, as well as being fast and easy to install.

An arrangement of barrier modules is joined together at respective ends thereof, to provide movable water or sand ballasted protection barriers for applications such as pedestrian protection, traffic work zone separation, airport runway divisions, and industrial commercial uses. The arrangement includes a first plurality of connecting lugs disposed in a vertically-spaced arrangement on an end of a first barrier module and aligned pin receiving holes disposed in the first plurality of connecting lugs. A second plurality of connecting lugs is disposed in a vertically-spaced arrangement on an end of a second barrier module, with similar aligned pin receiving holes being disposed in the second plurality of connecting lugs. A dual-pin connector joins the first and second barrier modules together, comprising a top portion, a first pin extending downwardly from the top portion, and a second pin extending downwardly from the top portion in spaced relation to the first pin.

A protective barrier includes a rigid upright member including a post, a fitting having a housing with a first outer surface and a first inner surface. The housing includes a first hole extending from the first outer surface to the first inner surface; a first end, a second end and an inner chamber defined by the inner surface of the housing and extending from the first end to the second end; the first end having a flange sized and shaped for attachment to an outer surface of the rigid upright; at least one support member disposed within the inner chamber and extending from the first end toward the second end of the housing, the support member including a second hole. The protective barrier also comprises a hollow rail including a third end sized and shaped for being received within the inner chamber, the hollow plastic rail including a third hole; and a fastener extending through the first hole, second hole and third hole such that the hollow plastic rail is secured to the fitting.

The technology provides designs and methods for the transit management system, which facilitates transit vehicle operations and control for connected automated transit vehicles (CATVs) systems. The transit management system provides transit vehicles with customized/non-customized information and time-sensitive control instructions for transit vehicle to fulfill the driving tasks such as vehicle routing, lane changing, turning. The transit management system also realizes transit vehicle lane design, transportation operations and management services for transit vehicle. The transit management system consists of one of more of the following physical subsystems: (1) Roadside Unit (RSU) network, (2) Traffic Control Unit (TCU) and Traffic Control Center (TCC) network, (3) Vehicle Onboard Unit (OBU), (4) Traffic Operations Centers (TOCs), (5) Cloud platform. The transit management system realizes one or more of the following function categories: sensing, transportation behavior prediction and management, planning and decision making, and vehicle control. The transit management system is supported by road infrastructure, real-time wired and/or wireless communication, the power supply networks, and cyber safety and security services.

The technology provides designs and methods for the transit management system, which facilitates transit vehicle operations and control for connected automated transit vehicles (CATVs) systems. The transit management system provides transit vehicles with customized/non-customized information and time-sensitive control instructions for transit vehicle to fulfill the driving tasks such as vehicle routing, lane changing, turning. The transit management system also realizes transit vehicle lane design, transportation operations and management services for transit vehicle. The transit management system consists of one of more of the following physical subsystems: (1) Roadside Unit (RSU) network, (2) Traffic Control Unit (TCU) and Traffic Control Center (TCC) network, (3) Vehicle Onboard Unit (OBU), (4) Traffic Operations Centers (TOCs), (5) Cloud platform. The transit management system realizes one or more of the following function categories: sensing, transportation behavior prediction and management, planning and decision making, and vehicle control. The transit management system is supported by road infrastructure, real-time wired and/or wireless communication, the power supply networks, and cyber safety and security services.