the provisions set forth in Table 13. 5. 7-1 and Table 13. 5. 7-2 respectively.

Tablel3. 5. 7-1 Minimum length of rail inserting into two facing simple turnouts!m)

Turnout layout		Tracks	When trains are passing two sidings at same time /	When no trains are passing two sidings at same time /
	Normal condition	Abnormal condition
, x,	Main track	Passing speed in straight direction v >120km/h	12.5	12.5	12.5
Passing speed in straight direction v <120km/h	12.5	6.25	6.25
—""
Arrival and departure track	6.25	6.25
Other station tracks and secondary station tracks	—	—

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Tablel3. 5. 7-2 Minimum length of rail inserting into two trailing simple turnouts(m)

Turnout layout	Tracks	Turnout of wooden turnout sleeper	Turnout of concrete turnout sleeper
	Main track	Passing speed in straight direction v >120km/h	—	12.5
Passing speed in straight direction v <120km/h	6.25	8.0
Arrival and departure track	4.50
/S	Other station tracks and secondary station tracks
ryH
±X^~	Arrival and departure track	4.50
Other station tracks and
	secondary station tracks

Note;l The minimum length of rail inserting into two turnouts shall be adjusted by the requirements on turnout structure other than in line with the general rules set forth in Table 13. 5. 7-1 and Table 13. 5. 7-2.

2 When trains are passing two sidings at same time through two facing simple turnouts on main track, the length of rail inserting into 1 ^: 18 simple turnout shall be no less than 25 m.

3 When passenger trains are passing two sidings at the same time on arrival and departure track, the minimum length of rail inserting turnouts shall generally be 12. 5 m.

4 The inserted rail shall be of compromise rail when the rails in two adjacent two turnouts are different.

5 On other station track and secondary station tracks, when a wooden turnout sleeper is connected with another wooden turn­out sleeper,if one group of turnouts is connected in railing direction to two groups of 1 ^: 9 simple or 1 ^; 6 symmetrical turnouts, it shall insert a rail no less than 4.5 m between two groups of turnouts before and behind at least one shunt among them. If two groups of 1 ^: 9 simple concrete turnout sleeper turnouts connected in forward direction on a station track.it may insert a rail for 6.25 m long between the two turnouts.

6 When tracks in a passenger car servicing depot use 1 ^: 6 symmetrical turnout in a continuous manner, the rails in­serted shall be no less than 12. 5 m long.

7 When two turnouts are connected,it shall adopt the same type of turnout sleeper on main track,and should adopt the same types of turnout sleeper on station track. When different types of turnout sleepers are used on station track and two turnout sleepers are connected in forward direction, the length of rail inserted shall be no less than 12. 5 m;when two turnouts are connected in facing direction,the length of rail inserted shall be no less than 6. 25 m.

8 Train means marshaled train connected to a locomotive attached with specified locomotive sign. It does not include rolling stocks that do not possess complete trains conditions but be handled as trains.

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Explanation of Wording in This Code

1 Words used for different degrees of strictness are explained as follows in order to
mark the differences in executing the requirements in this code.

1) Words denoting a very strict or mandatory requirement;
"Must" is used for affirmation;"must not" for negation.

2) Words denoting a strict requirement under normal conditions:
"Shall" is used for affirmation;"shall not" for negation.

3) Words denoting a permission of a slight choice or an indication of the most
suitable choice when conditions permit:

Should" is used for affirmation;"should not" for negation;

"may" is used to express the option available,sometimes with the conditional permit.

2 "Shall comply with... "or "Shall meet the requirements of... "is used in this code
to indicate that it is necessary to comply with the requirements stipulated in other relative
standards and codes.

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