Some standard content:
GB 6389--1997
Railway crossings in industrial enterprises are the weak link of railway and road traffic safety. The existence of crossings poses a potential threat to the safety of vehicles and pedestrians, and its importance is becoming more and more obvious. Therefore, the quality of crossing safety management and the degree of perfection of crossing safety facilities play an important role in preventing crossing accidents and improving the safety of crossings. Based on GB6389-86 "Safety Standards for Railway Crossings in Industrial Enterprises", this standard adds three chapters: "Scope", "Reference Standards" and "Definitions", proposes the crossing classification as a separate chapter, cancels special types of crossings, and thus divides all crossings into four levels. In terms of crossing signal equipment, the crossing protection signal is cancelled and replaced by the blocking signal. In terms of crossing signs, the central dividing strip and traffic dividing strip of the crossing section are replaced by the central dividing strip guardrail and isolation pier of the crossing section respectively, and speed limit signs and speed limit release signs are added at all levels of crossings.
In addition, in the arrangement of the standard, in order to ensure the compact structure of the standard content, the train approach notification time and the calculation of the approach section length are placed in the form of Appendix B after the main text of the standard. This standard will replace GB6389-86 from the date of entry into force. Appendix A and Appendix B of this standard are both appendices to the standard. This standard is proposed by the Ministry of Labor of the People's Republic of China. The drafting unit of this standard is the Safety and Environmental Protection Research Institute of the Ministry of Metallurgical Industry. The main drafters of this standard are Lu Shunqing, Yang Lou, Deng Yaoxing, and Li Lieping. This standard was first issued in 1986.
1 Scope
National Standard of the People's Republic of China
Safety standards for railway level crossings in industrial enterprises
Safety standards for railway level crossings in industrial enterprisesGB63891997
Replaces GB6389-86
This standard specifies the classification of railway level crossings in industrial enterprises, the setting of level crossings, the equipment and guarding of level crossing safety facilities, and level crossing signals and signs.
This standard applies to standard gauge railway crossings in industrial enterprises, and does not apply to railway crossings in mines, forest areas, national railways, and local railways. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the new versions of the following standards. GB10494--89 Technical conditions for signal equipment at railway section crossings GBJ12-87 Design specifications for standard gauge railways in industrial enterprises GBI22--87 Design specifications for factory and mine roads
CJJ37-90 Design specifications for urban roads
JTJ01--88 Technical standards for highway engineering
3 Definitions
This standard adopts the following definitions.
3.1 Railway crossing railway Itvel crossing A plane crossing with a surface width of 2.5m or more on the railway that directly connects with the road. According to the guarding situation, it is divided into manned crossing and unmanned crossing. [3.1 in GB10494-89]. 3.2 In-line railway level crossing The railway crossing where the industrial enterprise railway and the factory road intersect at the same level. 3.3 Factory-out railway level crossing The railway crossing where the industrial enterprise railway and the factory road intersect at the same level. 4 Level crossing classification
4.1 Level crossings are divided into four levels. Level II, II and IV level crossings can be upgraded according to actual safety needs, but cannot be downgraded. 4.2 Level crossings that meet one of the following conditions are: within 12 hours of the first landing, the traffic volume of the crossing is 18,000 vehicles or more; within 12 hours of the second landing, the traffic volume is 6,000 to 18,000 vehicles, and the observation conditions are poor. 4.3 A level 2 crossing is one of the following: a crossing with a traffic volume of 6,000 to 18,000 vehicles per day within 12 hours and good visibility conditions; a crossing with a traffic volume of 2,000 to 6,000 vehicles per day within 12 hours between March and October 1, 1997, approved by the State Technical Supervision Bureau; a crossing with poor visibility conditions; a crossing with commuter cars or buses passing through; a crossing with special cargo vehicles such as high-temperature molten metal and ingots passing through. 4.4 A level 3 crossing is one of the following: a crossing with a major accident or repeated accident in the past five years; a crossing with visibility conditions that do not meet the 5m parking lateral sight distance requirement in 6.2. 4.5 A level 4 crossing is a crossing other than level 3. Note:
1 The traffic volume of the crossing refers to the product of the railway traffic volume and the road traffic volume passing through the crossing, in units of vehicles. 2 The railway traffic volume refers to the number of times a train (including single locomotives, railcars, and shunting operations, etc.) passes through the crossing. If the railway traffic volume is equal to zero within 12 hours, it is calculated as 1.
3 The road traffic volume refers to the number of standard vehicles passing through the aisle 11. Various vehicles and pedestrians are converted into the number of standard vehicles according to the conversion factor K in Appendix A (Appendix to the standard).
4 The 12 hours between crossings refers to the time interval starting from 1 hour before the start of the normal day shift. 5 When the traffic volume of a newly built or rebuilt crossing is difficult to check, its grade can be determined based on the main factors such as the designed railway and road traffic volume. 6 Poor visibility means that the lateral sight distance of the motor vehicle driver to the crossing or the sight distance of the locomotive and vehicle shunting personnel to the crossing does not meet the requirements of 6.1. 5 Basic requirements
5.1 The crossings shall be graded according to the provisions of this standard. 5.2 All levels of crossings shall be equipped with safety facilities in accordance with the provisions of this standard and shall be kept intact and effective. 5.3 The horizontal and vertical sections of the crossings and the roads nearby shall comply with the relevant provisions of GBJ22. 5.4 When designing and constructing new or renovated crossings, the crossing safety facilities must be designed and constructed at the same time. Only after confirming that the crossings meet the requirements of this standard can they be opened for use.
5.5 The addition or removal of crossings on railway lines must be approved by the enterprise's railway transportation department. 5.6 The enterprise's safety department and railway transportation department shall inspect and identify existing crossings. Those that do not meet the requirements of this standard shall be renovated or removed within a time limit.
5.7 Railway crossings where industrial enterprise railways intersect with urban roads and highways shall comply with the relevant provisions of CJ37, JTJ01 and GBJ12.
6 Crossing Setting
6.1 The sight distance of the crossing shall meet the following requirements; a) For inner crossings, the speed limit of the train shall be such that the driver of the motor vehicle can see the locomotive and vehicle beyond the lateral sight distance specified in Table 1 at a distance of 20m from the crossing intersection;
b) For outer crossings, the speed limit of the train shall be such that the driver of the motor vehicle can see the locomotive and vehicle beyond the lateral sight distance specified in Table 1 at a distance of 50m from the crossing intersection;
c) The distance at which the locomotive and vehicle crew can see the crossing shall not be less than the sight distance of the locomotive and vehicle crew to the crossing listed in Table 1. Table 1 Sight distance at crossings
Train speed limit
Motor vehicle driver’s lateral sight distance at crossings r
In-plant crossings
Motor vehicle crew’s sight distance at crossings
Train speed limit
GB6389-1997
Table 1 (end)
Motor vehicle driver’s lateral sight distance at crossings m
“Inner crossings
Note: 1 Outer track, train speed limit When the speed exceeds 40 km/h, the sight distance can be determined by calculation. The sight distance of the locomotive and vehicle dispatching personnel at the factory crossing
6.2 Due to the restrictions of terrain and other conditions, the motor vehicle driver should be able to see the locomotive and vehicle outside the lateral sight distance specified in Table 1 when parking 5m outside the outermost rail outside the road. When it does not meet the requirements, the crossing should be guarded by a person or the gate should be automatically signaled. 6.3 The crossing should not be set within the turnout or station area and 6.4 The pavement should be kept flat and durable, and a paving layer that is strong, durable, flat, stable and easy to repair should be selected. If the pavement of the road does not meet the requirements of this standard, it should be repaired and renovated within a time limit. 6.5 The pavement width of the factory and factory crossings is generally the same as the roadbed width of the intersecting road. For roads with sidewalks, the pavement width of the crossing should include the width of the sidewalk. When the road is widened, the pavement of the crossing should be widened at the same time. The length of the paving surface of the crossing should extend to 0.5~2.0m outside the rail. 6.6 The railway line at the crossing should be equipped with guardrails, which can be old rails. The width of the wheel flange groove is 70~100mm in a straight line and 90~100mm in a curve; the depth of the wheel flange groove is not less than 45mm. The ends of the guardrail should be made into horns, 300mm away from the end of the guardrail, and bend towards the center of the line. The terminal of the guardrail is not less than 150mm away from the rail. 7. Equipment and supervision of safety facilities at crossings
7.1-Level crossings should be manned and equipped with one of the following four types of major safety facilities: a) automatic crossing signals, automatic barriers, blocking signals, communication equipment, and obstacle detection when conditions permit; 3) automatic gate signals, electric barriers, communication equipment, and blocking signals as needed; c) automatic crossing notifications, crossing signals, electric or manual barriers, communication equipment, and blocking signals as needed; d) gate signals, manual or manual barriers, communication equipment, and blocking signals as needed. 7.2 Grade 3 crossings shall be equipped with one of the following four types of major safety facilities, and whether to be manned shall be determined in accordance with regulations: a) Automatic crossing signals, automatic barriers, and no one is on duty. If conditions permit, set up barrier detection; b) Automatic gate signals, electric barriers, and manned. Set up blocking signals as needed: c) Automatic crossing notification, manned or electric barriers, and manned. Set up blocking signals as needed; d) Manual or electric barriers, communication equipment, and manned. Set up blocking signals as needed. 7.3 Grade 3 crossings shall be equipped with two of the following types The main safety facilities of the level 4 crossing shall be equipped with one of the following two types of main safety facilities according to the observation conditions: a) When the observation conditions are good, the inner crossing shall be equipped with slow-speed yielding signs and slow-speed yielding markings; b) When the observation conditions are poor and the 5m stop sight distance requirement cannot be met, the stop-and-look-and-yield signs and stop lines shall be set. 7.5 The equipment and guarding of safety facilities at all levels of gates shall comply with the provisions of Table 2. 241
Remove speed limit sign
Speed limit sign
Center line of crossing section
Central divider of crossing section
Same-machine whistle sign
Allow straight line
Stop and look for the way sign
Slow speed look for the way marking
Slow speed look for the way sign
Railway crossing sign
Obstacle detection|| tt||Automatic signal at crossing
Automatic notification at crossing
Remote communication equipmentbzxZ.net
Block signal machine
Crossing signal machine
Automatic barrier
Manual electric barrier
Guarding situation
GB6389-1997
GH6389--1997
7.6 A crossing house should be built at a manned crossing. Its location should not hinder the guard from looking at the approaching vehicles and facilitate the protection of the crossing, and should not affect the lateral sight distance of the motor vehicle driver and the sight distance of the locomotive and vehicle dispatching personnel to the crossing. If the crossing is long and inconvenient to manage, a crossing house can be set up at each end of the crossing.
The crossing house should be equipped with protective signaling equipment, clocks and loudspeakers, etc. 7.7 For the entrance outside the factory for electric locomotives, a limit frame shall be installed on both sides of the crossing passage, with a clear height of 5m. A limit frame may be installed at the factory crossing, or a limit height sign may be installed according to 9.1.7.
8 Crossing signal facilities
8.1 General provisions
8.1.1 The crossing signal shall be installed on the right side of the crossing direction between road vehicles, at a location that is convenient for motor vehicle drivers to look out, and the distance from the outer side of the outermost rail shall not be less than 5m.
The type of crossing signal is shown in Figure 1, and the height of the center of the moon lamp from the road surface shall not be less than 2.5m. 8.1.2 The meaning and traffic regulations of the light signals of the crossing signal are as follows: a) The moon-white light is on steadily, indicating that the equipment is normal, the road is open, and vehicles and pedestrians are allowed to pass through the crossing; b) When the two red lights flash alternately and the red light is on steadily and the moon-white light is off, it means that the train is approaching the crossing and vehicles and pedestrians on the road are prohibited from crossing the signal;
) When both the red light and the moon-white light are off, it is a power outage or equipment failure, and the crossing avoidance signal is invalid. At this time, vehicles and pedestrians on the road should pay attention to look out and pass through the crossing after confirming that it is safe. 8.1.3 In principle, the length of the barrier should not be less than the width of the crossing. According to the specific conditions such as the width of the crossing, a pair of semi-blocking barriers, a pair of full-blocking barriers or two pairs of semi-blocking barriers can be used. When a pair of semi-blocking barriers across the same blocking surface falls, the distance between the two tops must be less than 0.5m. 8.1.4 Fully blocked barriers are installed on the right side of the road vehicles heading towards the crossing: semi-blocked barriers are installed on both sides of the road vehicles heading towards the crossing. The distance between the barriers and the outer side of the outermost rail of the crossing should not be less than 3m. 8.1.5 The barriers should meet the following requirements;
a) Generally made of light and durable materials, the barriers assembled in sections should be adjustable and replaceable; b) The surface is painted with 45° oblique stripes of yellow and black phases with a spacing of 250mm; c) Reflective materials that do not require power can be installed on automatic barriers as needed, or red reflective paint can be applied to the railings with signs; d) Automatic barriers should be able to swing horizontally 10°. 8.1.6 The lifting and lowering of barriers can be electric, automatically controlled or manually operated. Electric barriers operated by crossing guards should be able to stop or change the direction of movement of the barriers at any time during the lifting and lowering process. Electric barriers or automatic barriers should have manual operation functions. 8.1.7 When two pairs of semi-blocking barriers are used, the semi-blocking barriers at the entrance and exit ends can be closed in sequence according to the actual needs of the crossing. When the pole is raised, the two pairs of semi-blocking barriers should be raised at the same time. The electric barrier falls for 6 to 10 seconds.
8.1.8 Barriers are generally positioned on the open road. Under special circumstances, the factory crossing can be positioned on the blocked road with the approval of the relevant road management department of the enterprise.
8.1.9 When the barrier is in the open position, the vertical distance from the edge of the road surface should meet the requirements of the road construction limit. When the barrier is in the fallen position, it should be in a horizontal state, with a height of 1000 to 1200 mm from the center of the road. 8.1.10 The fence should meet the following requirements: a) Generally, it adopts steel mesh structure, with a height of 1.20-1.50m, and the length can be determined according to the width of the road; b) The fence is open on both sides, rolling horizontally, and the rolling speed should be 1m/sc); it should be able to be closed or opened by people in case of power failure; d) Other requirements can be determined by referring to the relevant regulations of the fence. 8.1.11 At a crossing with crossing signals, when the signal machine, fence and its control equipment fail or the power is cut off, the guard at the manned crossing should use other safety facilities when the train approaches; at an unmanned crossing, the crossing management department should take measures to ensure safety until the crossing signal returns to normal.
8.2 Manual crossing signal
8.2.1 The control panel of the manual gate signal and the operating lever of the artificial barrier should be located at a position that is convenient for the crossing guard to observe and operate. The traction transmission device of the artificial barrier should not affect the road traffic. When the crossing is equipped with a blocking signal, the blocking button should be sealed. 8.2.2 When the train approaches the crossing, the road 11 guard should first operate the road 11 signal according to the distance of the train approaching the crossing specified by the enterprise, and at the same time issue an audible alarm and a red light signal, drop the pole in time, and monitor the safety of the crossing. After the electric or artificial barrier falls, the road guard should cut off the audible signal. After the rear of the train passes the crossing, the road 1 signal should immediately return to the road traffic state.
8.2.3 The blocking signal should be set on the left side of the ten trains heading to the road 1 direction, and the distance from the edge of the crossing pavement should not be less than 15m. 8.2.4 The blocking signal is a high column type. Its back plate is square, and the column is painted with black and white 45° oblique stripes with a spacing of 200mm, as shown in Figure 2. The light of the signal is off and it does not serve as a signal; when the crossing is blocked and a train is approaching, the blocking signal is opened and the red light is displayed, indicating that the train is not allowed to pass the signal.
8.3 Automatic crossing notification and crossing dynamic signal
8.3.1 Automatic crossing notification is for the use of the road guard. The indicator lights and sounders on the indoor signal display panel should meet the following conditions: a) There is an approach indicator light in the approach direction of each line, and the light is off at ordinary times. When the train approaches and passes through the crossing, the corresponding approach indicator light is on;
b) When the train enters the approach section, the crossing guard will emit a continuous sound; when there is a power outage or a major equipment failure, an intermittent sound will be emitted to the gate guard. After the above sound is confirmed by the gate guard, the sound can be cut off by the self-resetting button. c) For a crossing with two or more tracks, after the first train approaches the crossing and a notification is issued, another notification should be issued when another train approaches the crossing from another track.
8.3.2 Outside the crossing room with automatic notification, a sound device for notifying the crossing guard should also be installed, and its control conditions are the same as those of the indoor sound device.
8.3.3 When a train approaches or passes through the crossing, the automatic crossing signal shall automatically display a red flashing signal and emit an audible signal to vehicles and pedestrians on the road.
For a crossing equipped with an automatic crossing signal and an automatic barrier, when a train enters the approaching section and the crossing signal automatically emits an audible and red flashing signal, the barrier shall begin to fall after the time (t,) that the road vehicle passes through the crossing at the specified minimum speed, so as to allow vehicles and pedestrians entering between the two barriers to pass through the crossing; after the automatic barrier falls, the sound shall be automatically cut off. 8.3.4 After the rear of the train passes through the crossing, the automatic crossing signal or the automatic crossing signal and the automatic barrier shall promptly restore the road traffic status. 8.3.5 During the process of the train approaching or passing through the crossing, the automatic crossing signal shall be displayed promptly, correctly and reliably; when a fault occurs in the track circuit or its control equipment, the automatic crossing signal shall be able to automatically guide the display of the train approaching status or the alarm deactivation status. 8.3.6 For the calculation of the train approaching notification time and the approaching section length, see Appendix B (Appendix to the Standard). The approach time of a single-track section shall not be less than 40s for a crossing with railings and not less than 30s for a crossing without railings; the approach time shall increase by 5$ for each additional railway line.
8.3.7 In sections with automatic blocking or track circuits, the existing track circuits shall be used. When the existing track circuit cannot meet the requirements for the length of the approach section of the crossing signal, the alarm time may be appropriately extended, but the total alarm time shall not exceed 60s. When it is really difficult to use the existing track circuit, other types of superimposed transmission equipment or a microcomputer interlocking system may be used for centralized control. 8.4 Technical requirements for equipment and devices
8.4.1 The power supply level of the crossing signal equipment shall not be lower than level 2. The allowable range of the AC power supply voltage is 380=38V, 2203V; the allowable range of the DC power supply voltage is 1211.V, 24°2.1V. 8.4.2 The lighting and sound signals of the crossing signal should meet the following requirements: a) The straight line display distance of the red light should not be less than 100m, the straight line display distance of the moon-white light should not be less than 50m, and the deviation angle should not be less than 40°. b) The light source should be 12V25W or 12V15W double-filament bulb; c) The sound signal should use noise-free, economical and durable sound equipment; d) The flasher should be an electronic flasher or a relay flasher, with a flash frequency of 60 times/min±10 times/min, a light-to-light ratio of 1:1, and a load capacity of 100W. 8.4,3 The track circuit used for the automatic crossing notification and automatic crossing signal should have reliable anti-interference ability, and lightning protection measures should be taken according to actual needs. 8.4.4 The crossing signal equipment should use products that meet the requirements of this standard. The equipment or devices used should work reliably under the required working environment conditions.
8.4.5 When the automated equipment fails, it should automatically guide to ensure a safe state or display. 9 Crossing signs, guard posts and markings
9.1 Crossing signs
9.1.1 All levels of crossings should be equipped with railway crossing signs or multi-track railway crossing signs according to the number of railway tracks crossed. 9.1.2 The board of the railway crossing sign is an equilateral triangle with the top angle facing upward, and the size is shown in Figure 3. The board color is yellow background, black border, and familiar pattern. The pattern should be drawn in proportion to the production drawing (see Figure 4). The railway crossing sign (see Figure 5) indicates that there is a single-track railway crossing ahead, warning vehicles and pedestrians to pay attention to the wall and be careful of trains. 9.1.3 The cross-shaped symbol indicating the intersection of multiple railways and roads is white background and red border, as shown in Figure 6. It is located at the top of the railway crossing sign, and its intersection is 400mm away from the vertex of the triangle on the sign board. The cross symbol and the railway crossing sign together form a multi-track railway crossing sign, as shown in Figure 7. This sign indicates that there are multiple railway crossings ahead, warning vehicles and pedestrians to pay special attention to lookout and be careful of trains. 9.1.4 The stop and lookout sign is shown in Figure 8, which is an equilateral triangle with the vertex facing downward. The board size is the same as Figure 3, and the board color is red background and white.
This sign indicates that vehicles and pedestrians must stop or stop outside the stop line to lookout when passing through the crossing, and pass after confirming safety. 9.1.5 The fourth-level crossing that meets 6.1a) should be equipped with a slow-speed lookout sign. The slow-speed lookout sign is shown in Figure 9, which is an equilateral triangle with the vertex facing downward. The board size is the same as Figure 3. The board color is white background, red border and black characters. The width of the red border is 70mm.
This sign indicates that vehicles and pedestrians must walk, keep a close eye, and confirm that there are no trains approaching the crossing before crossing. When a train is about to pass through the crossing, they must stop outside the slow-speed lookout and yield markings. 9.1.6 The height of the "Stop" character on the Stop and Lookout Yield sign and the "Give" character on the Slow and Lookout Yield sign are 240mm and 170mm respectively. The character height is equal to the character width. The character height is in bold and uniform font, and the stroke thickness is 1/10 of the character height. 9.1.7 When there is no limit frame at the factory crossing where electric locomotives are running, a height limit sign should be set at both ends of the crossing, at appropriate locations on the right side of the direction where motor vehicles are heading to the crossing.
The height limit sign is circular, and its pattern and size are shown in Figure 10. The color of the board is white background, red circle and black pattern. This sign indicates that vehicles with a height of more than 4.5m are strictly prohibited from passing through the crossing. 9.1.8 At all levels of crossings, speed limit signs should be set on the right side of the direction where motor vehicles are heading to the crossing (see Figure 11), and a release sign should be set at the other end of the crossing. Speed limit sign (see Figure 12). The distance between the speed limit sign and the outer side of the outermost rail should not be less than 5m. The speed limit sign is a white background with a red circle and a black pattern, indicating that motor vehicles should pass through the crossing at a speed lower than the speed on the sign. The speed limit sign is a white background with a black circle, a black bar and a black pattern, with the pattern pressed against the bar. It means that motor vehicles are not subject to this speed limit. 9.1.9 Various signs should be placed on the side of the road in the direction of the crossing, within the field of vision of the motor vehicle driver, and should not be obscured by trees or buildings or structures. The distance from the outer side of the outermost rail should not be less than that specified in Table 3. 245
Sign name
Railway crossing sign
Slow speed lookout and yield sign
Stop and lookout and yield sign Sign
Speed limit sign
Speed limit removal sign
GB6389-1997
Table 3 Distance of various signs from the outermost rail Distance from the outermost rail
In-plant crossing
Out-plant crossing
9.1.10 The horizontal distance between the edge of the board surface of various signs on the roadside and the edge of the road surface (or hard shoulder) shall not be less than 250mm, and the height of the lower edge of the board surface from the road surface shall be 1.8~2.5m.
The board surface of various signs should generally face the direction of oncoming vehicles and form an angle of 80°90° with the center line of the road. 9.2 Horn sign
9.2.1 A driver horn sign should be set at the crossing. The locomotive driver must honk for a long time when seeing this sign. 9.2.2 The driver whistle sign is a square with a side length of 600mm. The connection between the sign and the column is shown in Figure 13. The face color of the sign is white with a black border and a black "". The width of the black border is 30mm. The outer edge should have a white substrate with a side width of 5mm. The character height is 320mm, the character height is equal to the character width, and the thick isolinear font is used, and the stroke thickness is 1/10 of the character height. The back and the column are milky white or light gray, and the height of the lower edge of the board from the rail surface is 1.4m
9.2.3 The driver whistle sign is set on the left side of the train heading to the crossing, within a range of 200 to 300m from the crossing. The specific setting distance is determined based on the train speed, the length of the crossing and the terrain. When the setting distance is restricted at the Guangnei crossing, it can be appropriately shortened. 9.3 Crossing guard posts and markings
9.3.1 Guard posts shall be provided for level 3 and 4 crossings (except in special cases), and can be provided for level 2 crossings according to actual needs. Crossing guard posts are shown in Figure 14 and can be made of reinforced concrete, natural materials, etc. Two to five guard posts are provided on each side of the road at both ends of the crossing. The first guard post is 2.0~2.5m away from the outer side of the outermost rail. The distance between guard posts is 1.5m, 0.85m above the road surface, and the surface is painted with black and white horizontal stripes 200mm wide each.
9.3.2 For two-lane crossings with automatic crossing signals and automatic barriers, central dividing strip guardrails can be provided for the crossing section as required. The central dividing strip guardrails of the crossing section are connected by isolation piers and steel pipes or cable chains, and are arranged along the center line of the road at both ends of the crossing. The distance between isolation piers is 5m. The starting point of the central median guardrail should be close to the lowered railing, the total length should not be less than 20m, and the color should be red and white. 9.3.3 For two-lane intersections with automatic crossing signals but no automatic barriers, the center line of the intersection section should be set. The center line of the intersection section indicates that vehicles and pedestrians are not allowed to cross or press the line to pass through the intersection under any circumstances. 9.3.4. The center line of the road section at the crossing shall comply with the following provisions: a) The center line of the road section at the crossing shall be a single solid yellow line; b) It shall be painted on the center line of the roads at both ends of the crossing, and its length shall not be less than 60m for the crossing outside the factory and 20m for the crossing inside the factory; the width shall be 100-150mm. 9.3.5 Stop lines shall be set at all crossings with stop, look and yield signs: Stop lines indicate the position where vehicles and pedestrians wait for the release signal or stop and look. That is, when the crossing signal shows a red light or the crossing guard indicates that the train is about to pass, vehicles and pedestrians must stop outside the stop line in turn. Stop lines should be used in conjunction with stop, look and yield signs. 9.3.6 The stop line shall comply with the following provisions:
a) The stop line is a single solid white line with a line width of 200mm, as shown in Figure 15; 246
GB6389-1997
b) The length of the stop line is: for a two-lane crossing, it is from the right curb of the direction of the motor vehicle to the center of the road. For a one-way crossing, it should span the entire road surface;
c) The stop line should be painted at 1.5 to 3.0m from the guardrail at both ends of the crossing. For a crossing without a guardrail, it should be painted at 5m from the outermost rail at both ends of the crossing. The stop line should be perpendicular to the center line of the road. 9.3.7 For a crossing with a slow-speed lookout yield sign, a slow-speed lookout yield marking line should be set. The slow-speed lookout yield marking line is two parallel white dotted lines with a line spacing and line width of 200mm, as shown in Figure 16. This marking is used in conjunction with the slow-speed lookout and yield sign to indicate that vehicles and pedestrians must slow down and lookout when passing through unattended factory crossings. When a train is about to pass, vehicles and pedestrians must stop outside the marking in turn. The slow-speed lookout and yield marking should be painted 5m outside the outermost rail at both ends of the crossing and should be perpendicular to the center line of the road. Its length should be the same as the stop line.
Electric bell or other sound device
Crossing board
Red flashing light
Moonlight
Notice board
Concrete pole
Figure 1 Schematic diagram of crossing signal
GB 6389--1997
Rail surface
Figure 2 Interrupting signal machine
GB6389—1997
Figure 3 Dimensions of sign board
Figure 4 Example of making railway crossing sign board
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