The movement of trains is carried out according to the schedule, which displays the plan of railways. This is the main regulatory and technological document that coordinates the work of various departments: stations, locomotive depots, and so on.
Instructions
Step 1
In order to build a train schedule, you need to know its main components. First, the travel time of the train and the length of stay at the stations. Time is determined for each category of train, type of station and features of technological service. Secondly, it is important to know the minimum time intervals required for the operations of admitting, receiving and dispatching trains - station intervals. Thirdly, the time spent by locomotives at depot stations and train intervals in the package.
Step 2
On the graph, the train's progress looks like the movement of a point in a coordinate system. The abscissa represents the time of day, from 0 to 24 hours, and the ordinate represents distance. Conventionally, the trail of movement is denoted by a straight line connecting the points of arrival and departure. The angle of inclination of the straight line denotes the speed, which is taken as a constant value. Although, in fact, the speed changes. For example, slowing down a train before stopping or accelerating after departure.
Step 3
The graph is built on a standard grid: a time scale of 4 mm corresponds to 10 minutes, a distance scale of 2 mm is taken as 1 km. Each hour is divided by vertical lines into ten-minute intervals, each half-hour division is marked with a dashed line. The horizontal lines are the axes of the split points. The lines of movement of trains of odd direction are drawn from top to bottom, even - respectively, on the contrary. At the points of intersection with horizontal lines - the axes of separate points - the time of arrival, following and departure of trains is set. The number indicates the number of minutes in excess of a whole ten
Step 4
Train schedules are divided by speed into normal (non-parallel) and parallel. Under normal conditions, trains run on non-parallel schedules. In the second case, the movement of different trains runs at the same speed, i.e. parallel to each other. According to the number of main tracks, schedules are divided into one- and two-track. Also, according to the ratio of the number of trains on even and odd directions, the schedules are divided into paired - when the number of trains is the same - and unpaired.
