Traffic safety facilities refer to the collective name of facilities such as pedestrian underpasses, footbridges, lighting equipment, guardrails, posts, signs, and markings along the roads to ensure the safety of traffic and pedestrians and give full play to the role of roads. Traffic safety facilities include: traffic signs, markings, guardrails, barriers, outline markings, guidance markings, anti-glare facilities, etc.
Traffic safety facilities mainly include traffic signs, traffic markings, anti-collision facilities, barriers, sight guidance facilities, anti-glare facilities, bridge anti-throw nets, mileage indicators, 100-meter standards, highway boundary monuments, etc.
(A) traffic signs
Traffic signs use graphic symbols, colors, and text to convey specific information to traffic participants. They are used to manage traffic facilities, and are mainly used to prompt, induce, and instruct. It mainly includes the main signs such as warning signs, prohibition signs, direction signs, guide signs, tourist area signs, road construction safety signs, and auxiliary signs attached to the main signs. The support structure of the sign mainly includes column type (single column, double column), cantilever type (single cantilever, double cantilever), mast type and hanging type.
(II) Traffic markings
The main function of traffic markings is to regulate and guide traffic. It is composed of various lines, arrows, characters, elevation marks, protruding road signs, etc. marked on the road surface. The paint used to draw the road markings is divided into four types: solvent-based, hot-melt, two-component, and water-based. Spread glass beads on your face. Prominent road signs are classified into A and B categories according to whether they have retroreflective performance: those that have retroreflective performance are category A protruded road signs; those that do not have retroreflective performance are category B raised road signs.
(3) Anti-collision facilities
Anti-collision facilities mainly include guardrails and anti-collision cylinders. The main function of the guardrail is to prevent out-of-control vehicles from crossing the central divider or from dangerous sections of the roadside to rush out of the roadbed, so as not to cause secondary accidents. At the same time, it also has the effect of absorbing energy, reducing the degree of damage to the vehicles and people in the accident, and inducing vision. The form of the guardrail can be divided into flexible guardrails, semi-rigid guardrails and rigid guardrails according to different stiffnesses. According to the structure, it can be divided into cable guardrails, corrugated beam guardrails, concrete guardrails, beam-column steel guardrails, and combined guardrails. The guardrail board is divided into two kinds of double wave and three wave. The main function of the anti-collision cylinder is to absorb energy, reduce the degree of damage to the vehicles and people in the accident, and also induce the sight.
(Four) isolation barrier
The main function of the barrier is to isolate road land, and at the same time, separate people and animals that may affect traffic safety from the road to ensure the normal operation of the road. It mainly includes woven mesh, expanded metal mesh, welded mesh, barbed wire, partition wall and evergreen hedgerow.
(5) Guidance facilities
The sight-guiding facilities mainly include divergent and convergent signs, linear guidance signs, contour signs, etc. The main function is to allow drivers to understand the shape and direction of the road ahead by reflecting the lights at night, making them ready in advance. The structure of split and merge signs and linear guidance signs is the same as that of traffic signs. The outline signs mainly include attachments, columns and other forms. The retro-reflective materials used for contour marking mainly include reflectors and reflective films. Among them, reflectors are available in microprism and glass bead types.
(VI) Anti-glare facilities
The main function of the anti-glare facility is to avoid glare caused by the headlights and ensure driving safety at night. Anti-glare facilities are mainly divided into artificial anti-glare facilities and green anti-glare facilities. Artificial anti-glare facilities mainly include structural forms such as anti-glare plates and anti-glare nets.
(VII) Bridge anti-dropping net
Bridge anti-dropping nets are mainly set on the overpasses or the separate interchanges crossing the main line and the separate interchanges crossing the railway or other high-grade highways on the main line to prevent debris from falling on the road lanes under the bridge to ensure driving safety. It mainly includes steel mesh, welded mesh and other structural forms.
(8) Mileage mark (inscription), 100-meter mark (pile) and highway boundary monument
Milestones (stables), 100-meter (stakes) and highway boundary markers are mainly used to identify road mileage and highway land boundaries.