Category : news
Publish Date :1399/08/27 - 11:53
Code :5

What are the communication signs of railways?

These are signs that are contractually used to transmit news and orders and warn about the leading conditions in the railway and are binding.

The following three materials should be considered in the selection of signs:

A: The uniformity and uniformity of the method of their application along the line.

B: Install signs in places where it is necessary and it is possible to see them and use them when necessary. A: Using certain and authorized and predetermined symbols. Therefore, only the symbols mentioned in this regulation are allowed and the use of other symbols that do not comply with this regulation is strictly prohibited.

3-23- Officers who use the equipment of the signs during the service, are obliged to keep the used equipment safe and clean and always be ready to work.

4-23- In using the designation mark on trains, there should be no difference between day and night so that the recipient marking when crossing the tunnel, trench, fog, shadow or anything that could not have been predicted before moving, Do not be in danger or trouble.

Signs used on railroads are generally of two types:

Railway visual signs
These include fixed and moving signs such as traffic lights, sidewalk signs (odometer, incline and escalator, etc.), stop sign, deck sign, flag sign and speed reduction, worker in the line of visual signs are divided into the following three categories:

Permanent symptoms (fixed)
There are signs that are permanently installed according to the requirements of the place. Such as types of lights (signals) and fixed signs installed next to the line.

Temporary (animated) signs
There are signs that are installed as needed and temporarily and removed when necessary. Such as workers' sign in line, speed reduction sign and ....

Hand signs
There are signs whose orders are manually transmitted and presented to the drivers of railway vehicles by the officers in charge, such as flags, steering wheels, etc.

7-23- The signs must be announced with the utmost care and the signifier must completely face the sign recipient, so that the sign recipient understands the sign well.

8-23- It is a command mark that if it is presented by a competent and responsible officer, it must be definitely executed.

1-8-23- Only in cases where the recipient is sure that the execution of the order will lead to danger, he can delay its execution at his own risk and, if necessary, inform the signifier.

Train signs
These signs are installed or attached to the train and are included in the formation, tuning and dispatch of the train.

Signs that are installed on vehicles
The end mark of the train, the label of dangerous goods (especially for trains carrying dangerous goods) and ..

2-9-23- Signs used by the driver: movement whistle, emergency whistles when necessary), etc.

3-9-23- The signs used by the train officials are like the command given to the locomotives by the train officials.

4-9-23- Signs used by station officials. Like the commands that station officials give to rail vehicles when needed.

10-23- If a sign is not recognizable to the driver of the railway vehicle, it is considered as a stop.

11-23- Observance of stop signs provided by each person (responsible and irresponsible) is mandatory for drivers of rail vehicles.

12-23- Arranging and forming the train at the station must be done according to the order and permission of the station manager or his deputy or the station manager at the time. Locomotive drivers and all train staff and station needles are obliged to follow the signs and issue orders in a timely manner. Implement.

13-23- The color of the signs has a special meaning. Color or red light means stop and danger, color or green light means free movement or free passage, and yellow color or light means precaution or deceleration of rail vehicles.

Railway audible signals
These include audio signals such as wireless messages, whistles, beeps, crackers, etc.

Line signs
Shape and size of numbers on fixed linear symbols:

The written form of the numbers that are inserted on the boards should be black and in accordance with the following figure and the height of the numbers on it should be proportional to the dimensions of the board, at least 12 and at most 20 cm, the thickness of the pen should be 3 cm. The base of all fixed linear signs is a pipe with a diameter of 5 to 7 cm that in order to prevent their rotation or separation, the end of its base should be installed and fixed on the ground as a tripod.

Odometer mark

This symbol shows the distance from the origin in kilometers. Specifications: It is a white rectangular plate with dimensions of 30 by 50 cm on a base 2.5 meters from the rail surface with the number of kilometers from the origin (Tehran or the branch line) written in black on the back.

Installation place: This sign is installed on the axes of one line and two lines on the right side of the line and in order to increase the kilometer from the beginning of the kilometer (Tehran or the branch of the line) and at a distance of one kilometer from each other to the destination. Note: In two-lane axes, when sending rail vehicles from the unconventional line, the driver is obliged to pay attention to all fixed line signs in the conventional line.

This symbol is used to indicate the amount of slope, ascent and flat line in a thousand and the length of the route that the rail vehicle must travel on sloping and flat lines.

Specifications: The white plate is rectangular with dimensions of 40 by 70 cm, which is installed on a 2.5-meter base, and the mark on it indicates the slope and up of the line, and the number on it indicates the length of the slope of the line in meters.

Installation location: This panel is installed on the axes of one line on the right side of the line and on the axes of the two lines on the outer part of the lines (right side for movement) and at the starting point of the slope.

From this symbol to display the amount of radius