CN104088204B - A kind of combination area of city and country's traffic circle traffic safety devices and method for designing thereof - Google Patents

Abstract

The present invention promotes speed perception and the directional perception of the traffic circle driver of the combination area of city and country while travelling, improve driver to barrier within the scope of street pedestrian and traffic circle depending on the ability of recognizing, a kind of combination area of city and country traffic circle traffic safety devices and method for designing thereof are provided, and this facility is included in the lower edge of traffic circle rotary island kerbstone and the striped object marking line at top; Along the line, concrete isolation pile is set with road outer ledge along the line in traffic circle rotary island kerbstone outside; Along the line, concrete isolation pile is set with side slope traffic circle each Road lateral edges line is along the line; Crossing and traffic circle edge, each sidecar road and crossing corresponding position, the fixing isolation pile of steel and the LED lamppost of setting. This method adopts roadmarking and vision inducible system cheaply, does not relate to extensive road infrastructure, small investment, and easily, instant effect, can improve combination area of city and country's road traffic safety in construction.

Description

A traffic safety facility and design method for a roundabout at an urban-rural junction

technical field

The invention relates to the field of traffic safety design at intersections, in particular to a traffic safety facility at a roundabout at an urban-rural junction and a design method thereof.

technical background

Accidents frequently occur at intersections. The intersection is the concentrated place of vehicle turning and the conflict zone of various traffic flows. Vehicles are likely to squeeze, collide and collide with each other when passing through the intersection, which is likely to cause traffic congestion and traffic accidents; among the proportion of traffic accidents in various road sections in the national statistics, accidents near the intersection and within the intersection area accounted for the largest proportion of accidents. 64% of the total, frontal collision accidents accounted for 23%, an average of 0.39 people were killed or seriously injured in each accident; side collisions accounted for 46%, and an average of 0.24 people were killed or seriously injured in each accident; rear-end collisions Accounted for 12%, with an average of 0.42 people were killed or seriously injured in each accident; the number of accidents caused by scratching was relatively low, while the number of accidents caused by hitting a stationary object accounted for a large proportion. From the analysis of accident causes, motor vehicle drivers accounted for 61% of accidents, pedestrians accounted for 21%, and non-motor vehicles accounted for 12%. Motor vehicle speeding and improper response of motor vehicle drivers are the main causes of accidents, and the impact of pedestrians also accounts for a relatively large proportion.

The traffic facilities at highway intersections are not perfect, and the environmental characteristics of low illumination have resulted in frequent accidents at highway unsigned intersections. As the existing roads are widely used by pedestrians as internal roads in villages and towns, but there are hardly any pedestrian safety facilities, and most of the traffic control facilities are not perfect, resulting in frequent collisions with fixed objects and pedestrian accidents. The probability of pedestrian death in accidents is 2.3 times higher than that on urban roads, and the rate of fatal accidents is also higher than that in major cities. All road intersections have no road lighting facilities, and the visibility is low. Foreign research shows that the death rate of accidents at night without lighting is about 3 times higher than that during the day.

The vehicle speed control method based on edge rate is applied. Edge rate is considered to be an important visual factor affecting speed perception. The edge rate is the relative speed at which points in space pass through the edge of the field of vision when a person is moving. Scholars at home and abroad use the edge rate to "unconsciously" use speed control in traffic to improve the speed perception of the highway environment. Master of Engineering Thesis, 2008) Through psychophysical experiments, it was found that when the edge rate is less than 2Hz or greater than 32Hz, the driver will underestimate the speed, and when the edge rate is 4Hz-16Hz, the experimenter will overestimate the speed. The rate of 12Hz is overestimated by more than 30%.

In the current urban-rural junction, the traffic safety facilities of roundabouts are not perfect, and under the environment of low illumination, it is difficult to guarantee the driver's accurate recognition of obstacles in the roundabout and pedestrians crossing the street.

Contents of the invention

The present invention provides the following technical solutions in order to improve the driver's speed perception and direction perception when driving at a roundabout in the urban-rural junction, and to improve the driver's ability to recognize pedestrians crossing the street and obstacles within the roundabout.

The method for designing traffic safety facilities at roundabouts at urban-rural junctions provided by the present invention comprises the following steps: painting striped facade marking lines at intervals of 2 to 4 m along the driving direction on the lower edge and top of the roundabout curb stones at the roundabouts; Set up concrete isolation piles along the outer side of the roundabout curb at the roundabout at intervals of 8 to 16m; set 4 to 6 concrete isolation piles at equal distances along the road along the road side edge line and along the side slope at each corner of the roundabout ; Pedestrian crosswalks are set on the road near the roundabout; at the edge of each side lane of the roundabout corresponding to the pedestrian crosswalk, steel fixed isolation piles are set at the near end of the vehicle's forward direction, and LED lamp posts are set at the far end. The height of the column is 8-10m, and the rear end of the LED lamp post is equipped with a waterproof control switch. The height of the waterproof control switch is 80-100cm from the ground, and it is manually controlled. Synchronously realize the delayed shutdown of the two-way LED lamppost.

According to the above technical scheme, the painted stripes facade marking line is a red and white facade marking line, the width of the top striped facade marking line of the round-the-island curbstone is 0.2-0.3m, and the lower edge of the round-the-island curbstone Striped façade marking lines coated with engineering grade reflective film tape.

According to the above technical scheme, the surfaces of the concrete isolation piles, steel fixed isolation piles, and LED lampposts are all coated with high-strength reflective film tapes, and the surfaces of the pedestrian crossings are coated with all-weather reflective markings.

According to the above-mentioned technical scheme, the red and white facade marking lines with the same height are painted on the bottom surface of the LED lamp posts, concrete isolation piles, and steel fixed isolation piles.

The present invention also provides a traffic safety facility at a roundabout at an urban-rural junction, which includes: a striped facade marking line painted at intervals of 2 to 4m along the driving direction on the lower edge and top of the roundabout curb stone at the roundabout; Set up concrete isolation piles along the outer side of the roundabout curb at the roundabout at intervals of 8 to 16m; set 4 to 6 concrete isolation piles at equal distances along the road along the road side edge line and along the side slope at each corner of the roundabout ; near the pedestrian crossing set on the road in the direction of the roundabout; the edges of the lanes on each side of the roundabout correspond to the pedestrian crossing, the steel fixed isolation piles set at the near end of the vehicle's forward direction, and the LED lamp posts set at the far end, said The height of the LED lamp post is 8-10m. There is a waterproof control switch at the rear end of the LED lamp post. The height of the waterproof control switch is 80-100cm from the ground, and it is manually controlled. Connect and synchronize the two-way LED light poles to achieve delayed shutdown.

According to the above technical scheme, the painted stripes facade marking line is a red and white facade marking line, the width of the top striped facade marking line of the round-the-island curbstone is 0.2-0.3m, and the lower edge of the round-the-island curbstone Striped façade marking lines are coated with engineering grade reflective film tape.

According to the above technical solution, the surfaces of the concrete isolation piles, steel fixed isolation piles, and LED lampposts are all coated with high-strength grade reflective film tapes, and the surface of the pedestrian crossing is coated with all-weather reflective markings.

According to the above technical scheme, the bottom surfaces of the LED lampposts, concrete isolation piles, and steel fixed isolation piles are coated with red and white elevation marking lines of the same height.

The lower edge and top of the roundabout curb at the roundabout are painted with striped façade marking lines every 2-4m along the driving direction to form a spatial high-frequency information flow. The frequency of the spatial high-frequency visual information flow is 4-8Hz. The setting of frequency-sensitive information flow can provide instantaneous speed perception, increase the driver's visual psychological response, and ensure that the driver's perceived speed is greater than the physical speed during vehicle operation; it is set every 8-16m along the outer side of the roundabout curbstone at the roundabout Concrete isolation piles; 4 to 6 concrete isolation piles are arranged equidistantly along the road along the road side edge line and along the slope at each corner of the roundabout to form the spatial intermediate frequency information flow and the visual information flow of the spatial intermediate frequency. The frequency is 0.5~2Hz, which is used to improve the driver's sense of direction and distance during driving. The LED lamp post is connected to the city power supply network, and the waterproof control switch provided at the rear end of the LED lamp post can meet the needs of pedestrians to cross the street independently and provide short-term lighting for pedestrians when crossing the street. The lower edge stripes of the curbstones around the island are coated with engineering-grade reflective film tapes on the façade marking lines.

The lower edge stripes and facade marking lines of the roundabout curbstones are coated with engineering-grade reflective film tapes, the surfaces of concrete isolation piles, steel fixed isolation piles, and LED lamp posts are all coated with high-strength reflective film tapes, and the surface of the pedestrian crossing is coated with Equipped with all-weather reflective markings, when the vehicle enters the roundabout, the headlights of the vehicle will shine on the reflective film belt, increasing the brightness in the intersection and improving the driver's visibility of obstacles in the intersection. When pedestrians cross the street, turn on the waterproof control switch on the manually controlled LED lamp post, and the LED lights will turn on, increasing the vertical illuminance of the pedestrian crossing, and increasing the brightness of the pedestrian crossing through the reflection of all-weather reflective markings on the road surface, which helps to realize the traffic at the roundabout at the urban-rural junction Unification of safety and lighting energy saving.

The present invention aims at the accident forms of the roundabout at the urban-rural junction, such as collision with fixed objects, collision with pedestrians, overspeed, imperfect traffic safety facilities, low illumination and other accident causes, by making full use of the existing curbs at the intersection, setting concrete isolation piles, etc. Facilities, build high-frequency and low-frequency visual information flow, comprehensively improve the driver's sense of speed, direction and distance during driving, so as to achieve the purpose of regulating and guiding driving behavior and effectively avoiding accidents. The method adopts a low-cost road marking and visual guidance system, does not involve large-scale road infrastructure, has low investment, is easy to construct, and has quick results, and can improve road traffic safety in the urban-rural junction.

Description of drawings

Fig. 1: the overall structural diagram of the traffic safety facility at the roundabout at the urban-rural junction of the present invention;

Fig. 2: the roundabout side view of the roundabout traffic safety facility at the urban-rural junction of the present invention;

Fig. 3: the top view of the roundabout of traffic safety facilities at the roundabout of the urban-rural junction of the present invention;

Figure 4: a side view of the LED lamp post of the present invention;

Figure 5: a top view of the LED lamp post of the present invention;

Figure 6: Schematic diagram of the relationship between perceived speed and physical speed under different edge rates;

Figure 7: Schematic diagram of the relationship between ideal perceived speed and actual physical speed;

In the attached drawings: 1-curbstone striped facade marking line; 2-concrete isolation pile; 3-steel fixed isolation pile; 4-pedestrian crosswalk; 5-LED lamp post; 6-waterproof control switch.

detailed description

In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 to 5, the present invention also provides a traffic safety facility at a roundabout at an urban-rural junction, which includes: the lower edge and top of the roundabout curb stones are painted at intervals of 2 to 4m along the driving direction. Striped façade marking lines installed; set up concrete isolation piles at intervals of 8-16m along the outer side of the roundabout curb stone at the roundabout; along the road along the road side edge line and along the side slope at each corner of the roundabout, etc. 4 to 6 concrete isolation piles are set at a distance; pedestrian crosswalks are set on the road near the roundabout; steel fixed isolation piles are set at the near end of the vehicle’s forward direction at the edge of each side lane of the roundabout corresponding to the pedestrian crosswalk, and the far end The LED lamp post installed at the place, the LED lamp post is 8~10m high, and the waterproof control switch is provided at the rear end of the LED lamp post. The waterproof control switch is 80~100cm above the ground, and it is manually controlled. Both are electrically connected with the bidirectionally arranged LED lampposts, and the two-way LED lampposts are synchronously turned off with a delay.

In the embodiment of the present invention, the painted stripe facade marking line is a red and white facade marking line, the width of the top striped facade marking line of the round-the-island curbstone is 0.2-0.3m, and the lower part of the round-island curbstone is The edge stripe façade marking line is coated with engineering grade reflective film tape.

In the embodiment of the present invention, the surfaces of the concrete isolation piles, steel fixed isolation piles, and LED lampposts are all coated with high-strength reflective film tapes, and the surface of the pedestrian crossing is coated with all-weather reflective markings.

In the embodiment of the present invention, the bottom surfaces of the LED lampposts, concrete isolation piles, and steel fixed isolation piles are coated with red and white facade marking lines of the same height.

The method for designing traffic safety facilities at roundabouts at urban-rural junctions provided by the present invention comprises the following steps: painting striped facade marking lines at intervals of 2 to 4 m along the driving direction on the lower edge and top of the roundabout curb stones at the roundabouts; Set up concrete isolation piles along the outer side of the roundabout curb at the roundabout at intervals of 8 to 16m; set 4 to 6 concrete isolation piles at equal distances along the road along the road side edge line and along the side slope at each corner of the roundabout ; Pedestrian crosswalks are set on the road near the roundabout; at the edge of each side lane of the roundabout corresponding to the pedestrian crosswalk, steel fixed isolation piles are set at the near end of the vehicle's forward direction, and LED lamp posts are set at the far end. The height of the column is 8-10m, and the rear end of the LED lamp post is equipped with a waterproof control switch. The height of the waterproof control switch is 80-100cm from the ground, and it is manually controlled. Synchronously realize the delayed shutdown of the two-way LED lamppost.

The lower edge and top of the roundabout curb at the roundabout are painted with striped façade marking lines every 2-4m along the driving direction to form a spatial high-frequency information flow. The frequency of the spatial high-frequency visual information flow is 4-8Hz. The setting of frequency-sensitive information flow can provide instantaneous speed perception, increase the driver's visual psychological response, and ensure that the driver's perceived speed is greater than the physical speed during vehicle operation; it is set every 8-16m along the outer side of the roundabout curbstone at the roundabout Concrete isolation piles; 4 to 6 concrete isolation piles are set at equal distances along the road along the roadside edge line and along the slope at each corner of the roundabout to form a spatial intermediate frequency information flow. Figure 6 shows the different edge rates Below is a schematic diagram of the relationship between perceived speed and physical speed, and Figure 7 is a schematic diagram of the relationship between ideal perceived speed and actual physical speed.

In the embodiment of the present invention, the painted stripe facade marking line is a red and white facade marking line, the width of the top striped facade marking line of the round-the-island curbstone is 0.2-0.3m, and the lower part of the round-island curbstone is The edge stripe facade marking line is coated with engineering grade reflective film tape.

In the embodiment of the present invention, the surfaces of the concrete isolation piles, steel fixed isolation piles, and LED lampposts are all coated with high-strength reflective film tapes, and the surfaces of the pedestrian crossings are coated with all-weather reflective markings.

In the embodiment of the present invention, the red and white facade marking lines with the same height are painted on the bottom surface of the LED lamp posts, concrete isolation piles, and steel fixed isolation piles.

The height of the manually controlled LED lamp post 5 is preferably 8~10m, which can expand the lighting area and reduce the probability of damage. The rear end of the manually controlled LED lamp post is provided with a waterproof control switch 6, and the height of the waterproof control switch 6 from the ground is 80~100cm. It is convenient for pedestrians to cross the street; each waterproof control switch 6 can simultaneously control the opening of the LED lamps on both sides of the same road; the delay time for the opening of the LED lamps on both sides is 0.5 to 1 minute. Turn off automatically to save energy and reduce the driver's visual load. The delay time can be adjusted according to the traffic flow and the width of the road, so that pedestrians can meet their autonomous needs.

The present invention is applicable to roundabouts in urban-rural junctions with a speed limit of 40-60 km/h where full-space and full-time lighting is not available, and helps to realize the unification of traffic safety and lighting energy saving at roundabouts in urban-rural junctions.

The steel fixed isolation pile 3 described in the present invention can be manufactured in batches in a factory, and when installed on site, it can be anchored to the ground first, then the LED lamp tube is installed, and finally connected to the urban power supply network. Pay attention to maintenance during use.

This method is aimed at the characteristics of imperfect traffic safety facilities and low illumination at roundabouts in urban-rural junctions. By setting up high-frequency and intermediate-frequency traffic safety facilities and using retroreflective materials, the speed perception and perception of drivers at roundabouts in urban-rural junctions can be improved. Direction perception improves the driver's ability to see pedestrians crossing the street and obstacles within the roundabout, so as to standardize and guide driving behavior and effectively avoid accidents. The method adopts a low-cost road marking and visual guidance system, does not involve large-scale road infrastructure, has low investment, is easy to construct, and has quick results, and can improve road traffic safety in the urban-rural junction.

Claims (10)

1. A design method for traffic safety facilities at roundabouts at the junction of urban and rural areas, characterized in that it comprises the following steps: the lower edge and the top of the roundabout curb stones along the driving direction are painted with striped facades at intervals of 2 to 4m Marking line; set up concrete isolation piles at intervals of 8-16m along the outer side of the roundabout curbstone at the roundabout; set 4-6 at equal distances along the road along the road side edge line and along the side slope at each corner of the roundabout Concrete isolation piles; set up pedestrian crossings on the road near the roundabout; at the edge of each side lane of the roundabout corresponding to the pedestrian crossing, install steel fixed isolation piles at the near end of the vehicle's forward direction, and install LED lamp posts at the far end. 2. The design method for traffic safety facilities at roundabouts at urban-rural junctions according to claim 1, wherein the painting stripes facade marking lines are red and white facade marking lines, and the top of the roundabout curb stone The width of the marking line on the striped facade is 0.2~0.3m, and the marking line on the striped facade at the lower edge of the curb around the island is coated with engineering-grade reflective film tape. 3. The method for designing traffic safety facilities at roundabouts at urban-rural junctions according to claim 1, wherein high-strength grade reflective film strips are all coated on the surfaces of the concrete isolation piles, steel fixed isolation piles, and LED lampposts , coating all-weather reflective markings on the surface of the pedestrian crossing. 4. The method for designing traffic safety facilities at roundabouts at urban-rural junctions according to claim 1, wherein the LED lamppost is 8-10m high, and a waterproof control switch is provided at the rear end of the LED lamppost, and the waterproof control switch The height of the switch from the ground is 80~100cm, and it is manually controlled. The waterproof control switch is electrically connected to the two-way LED lamp post and realizes the delayed shutdown of the two-way LED lamp post synchronously. 5. The method for designing traffic safety facilities at roundabouts at urban-rural junctions according to claim 1, characterized in that, the bottom surfaces of the LED lampposts, concrete isolation piles, and steel fixed isolation piles are painted with red paint with the same height. White and white facade marking lines. 6. A traffic safety facility at a roundabout at an urban-rural junction, characterized in that the facility includes: the lower edge and top of the roundabout curb stone along the driving direction with stripes painted at intervals of 2 to 4m. ; Set up concrete isolation piles at intervals of 8-16m along the outer side of the roundabout curbstone at the roundabout; set up 4-6 concrete piles at equal distances along the road along the road side edge line and along the side slope at each corner of the roundabout Isolation piles; pedestrian crosswalks set up on the road near the roundabout; steel fixed isolation piles set at the near end of the vehicle's forward direction at the edge of each side lane of the roundabout corresponding to the pedestrian crosswalk, and LED lamp posts set at the far end. 7. A traffic safety facility at a roundabout at an urban-rural junction according to claim 6, wherein the painted stripe facade marking line is a red and white facade marking line, and the top of the roundabout curb is The width of the marking line on the striped facade is 0.2-0.3m, and the marking line on the lower edge of the curb around the island is coated with engineering-grade reflective film tape. 8. A traffic safety facility at a roundabout at an urban-rural junction according to claim 6, wherein the concrete isolation pile, the steel fixed isolation pile, and the surface of the LED lamp post are all coated with a high-strength grade reflective film belt , the surface of the crosswalk is coated with all-weather reflective markings. 9. A traffic safety facility at a roundabout at an urban-rural junction according to claim 6, wherein the LED lamppost is 8-10m high, and a waterproof control switch is provided at the rear end of the LED lamppost, and the waterproof control switch The height of the switch from the ground is 80~100cm, and it is manually controlled. The waterproof control switch is electrically connected to the two-way LED lamp post and realizes the delayed shutdown of the two-way LED lamp post synchronously. 10. A traffic safety facility at a roundabout at an urban-rural junction according to claim 6, wherein the bottom surfaces of the LED lampposts, concrete isolation piles, and steel fixed isolation piles are coated with red paint with a consistent height. White and white facade marking lines.