Summarize the following court judgment. Appeal No. 1672 of 1973. Appeal by special leave from the judgment and order dated the 9th January	 1973 of the Madras High Court in C.R.P. No. 2486 of 1972. Y. section Chitale	 C. section Prakasa Rao and A. T. M. Sampath	 for the appellant. K. section Ramamurthy	 V. Subramanian and Vineet Kumar	 for the respondent. The judgment of the Court was delivered by BHAGWATI J. There were fifteen applicants before the Regional Transport Authority	 Chingleput for grant of a stage carriage permit to ply a bus on the route Red Hills to Kancheepuram. This route covers a distance of 501 miles of 81.27 kilometers and is a 'long :route	 ' within the meaning of that expression as used in rule 155A of the Motor Vehicles Rules	 1940. Out of fifteen applicants	 only two are before us	 namely	 the appellant and the respondent. The appellant was applicant No. 7	 while the respondent was applicant No. 6. The Regional Transport Authority	 after considering the applications	 made an order dated 19th June	 1971 granting the permit to the respondent	 though on marking according to the provisions contained in clause (3) of rule 155A	 the respondent obtained only 7.40 marks as against 9.00 marks obtained by the appellant. The main ground 	on which the Regional Transport Authority preferred the respondent to the appellant was that the respondent was a single bus operator	 while the appellant was a multi bus operator having four stage carriage permits including a stage carriage permit recently granted to him. The appellant and seven other applicants	 who were aggrieved by the decision of the Regional Transport Authority	 granting a permit to the respondent	 preferred appeals before the State Transport Appellate Tribunal impleading the respondent as the opposite party in the appeals. The State Transport Appellate Tribunal took the. view that at tile date of the consideration of the applications by the Regional Transport 93 Authority	 the respondent had a workshop but it was housed only in a thatched shed and not in a pucca fire proof building and the respondent was	 therefore	 not entitled to two marks under clause (3) (E) of rule 155A and his total marks should	 therefore	 have been 5.40 and not 7.40. The Regional Transport Authority had refused to grant two marks to the appellant on account of sector qualification on the ground that he had been plying only on temporary permits but this view did not find favour with the State Transport Appellate Tribunal which held that under clause (3) (C) of rule 155A it was immaterial whether sector experience was derived by an applicant under a temporary permit or a permanent permit and the appellant was	 therefore	 entitled to two marks under that clause on account of sector experience even though gained by operation on temporary permits. So far as the past record was concerned	 the State Transport Appellate Tribunal relied heavily on the fact that the history sheet of the appellant was clean without any adverse entry while the respondent had one adverse entry in the history sheet relating to his single stage carriage and four adverse entries in the history sheet relating to his lorry operation. The State Transport Appellate Tribunal also pointed out that a portion of the route fell within the interior roads and it was	 therefore	 desirable in public interest to prefer "an experienced operator instead of single bus operator". Having regard to these considerations the State Transport Appellate Tribunal set aside the order of the Regional Transport Authority granting permit to the respondent. The State Transport Appellate Tribunal then proceeded to consider who amongst the appellants before it deserved to be granted permit. After considering the claim of the appellants before it	 the State Transport Appellate Tribunal took the view that since the appellant had higher marks which reflected his superior qualifications and was an experienced operator with a clean history sheet	 he was entitled to be preferred to the other appellants and in this view	 the State Transport Appellate Tribunal	 by an order dated 23rd September	 1972	 granted permit to the appellant. The respondent thereupon preferred a revision application to the High Court under section 64B of the Madras Vehicles Act	 1939. The learned Single Judge	 who heard the revision application	 held that the State Transport Appellate Tribunal had acted with material irregularity in exercise of its jurisdiction in preferring the appellant to the respondent for the grant of permit. There were in the main five reasons which prevailed with the learned Single Judge in taking this view in favour of the respondent. First	 the learned Single Judge held that though according to the provisions for marking contained ' in clause (3) of rule 155A the appellant had admittedly more marks than the respondent	 that was not ' a determinative factor because rule155A was itself subject to the overriding consideration of public interest emphasised in section 47(1) of the Act and public interest required that in the socialist pattern of society which we had adopted monopoly should as far as possible be avoided and a smaller operator with one stage carriage permit should be preferred to a bigger operator having three or more stage carriage permits. This important consi deration was ignored by the State Transport Appellate Tribunal in 94 preferring the appellant to the respondent. Secondly	 the State Transport Appellate Tribunal had over looked the	 fact that the appellant was a recent grantee of a stage carriage permit though it was a relevant circumstance which weighed against the appellant in the process of comparison with the respondent. Thirdly	 a proper standard of comparison was not applied in considering the rival claims of the appellant and the respondent. Though the history sheet of the res pondent in regard to his performance	 as a lorry operator was scanned by the State Transport Appellate Tribunal over a period of ten years	 no such scrutiny was made in the case of the appellant of the history sheet relating to his stage carriage operation for the past ten years and this vitiated the order of the State Transport Appellate Tribunal. Fourthly	 the respondent was entitled to two marks on account of workshop under clause (3) (E) of rule 155A and these had been wrongly denied by the State Transport Appellate Tribunal	 and lastly	 the appellant was not entitled to two marks on account of sector experience under clause (3) (C) of rule 155A since the sector experience claimed by him was on the basis of operation on temporary permits. The learned Single Judge accordingly allowed the revision application and set aside the order of the State Transport Appellate Tribunal granting permit to the appellant. The result was that the order of the Regional Transport Authority granting permit to the respondent was restored. The appellant was obviously aggrieved by this order made by the learned Single Judge and he accordingly preferred the present appeal with special leave obtained from this Court. We will first dispose of the last two reasons which prevailed with the learned Single Judge in interfering with the order of the State Transport Appellate Tribunal. So far as the claim of the respondent 'for two marks in respect of workshop under clause (3) (E) of rule 155A is concerned	 we agree with the learned Single Judge that the 'State Transport Appellate Tribunal was in error in refusing that claim. 'The Regional Transport Officer under instructions from the Regional Transport Authority inspected the workshop of the respondent and found that it was in a pucca fire proof building and the respondent was accordingly entitled to two marks under clause (3) (E) of rule 155A. But that would not make any difference because even with these two marks	 the total number of marks of the respondent would not exceed 7.40 as against 9 marks of the appellant. Moreover	 	these 9 marks	 do not include two marks on account of sector experience under clause (3) (C) of rule 155A. The State Transport Appellate Tribunal gave two marks to the appellant on account of sector experience but the learned Single Judge took a different view. We do not think the learned Judge was right in refusing two marks to the appellant on this count. Clause (3) (C) of rule 155A provides that two marks shall be awarded to the applicant who on the date of consideration of the application by the Regional Transport Authority has been plying a stage carriage on the entire route:. It does not contain any restriction that in order to be entitled to these two marks the applicant should have been plying on the route; on the basis of a permanent permit. It is immaterial whether the applicant has been plying ton the route on a temporary permit or a permanent permit. What is 95 material is that the applicant should have experience of plying on the route and this experience would be there whether plying is done on a temporary permit or on a permanent permit. The appellant was	 therefore	 entitled to two marks on account of sector experience under clause (3)(C) of rule 155A and that would raise his total number of marks to 11. The position	 therefore	 was that the appellant was entitled to 11 marks as against 7.40 of the respondent. But that by itself would not be determinative of the controversy. The paramount consideration to be taken into account in determining as to which of the applicants should be selected for grant of permit always is public interest. Section 47(1) provides in so many words that the Regional Transport Authority shall	 in considering an application for a stage carriage permit have regard inter alia	 to "the interest of the public generally"	 and this is a consideration which must necessarily outweigh all others. It is ultimately on the touchstone of public interest that selection of an applicant for grant of permit must be justified. Clause (3) of rule 155A undoubtedly provides for giving of marks to the rival applicants but the number of marks obtained by each applicant can only provide a guiding principle for the grant of permit. It can never override the consideration of public interest which must dominate the selection in all cases. In fact clause (4) of rule 155A concedes that after the applicants are ranked according to the total marks obtained by them the applications shall be disposed of in accordance with the provisions of section 47(1). The fact that the appellant had 11 marks as against 7.40 of the respondent would certainly be a factor in favour of the appellant	 but notwithstanding his higher marks	 if public interest so requires	 he may have to yield place to the respondent in the matter of selection for grant or permit. Now	 two circumstances were relied upon by the learned Single Judge for outweighing the higher marks obtained by the appellant and justifying the grant of permit to the respondent in public interest. The first was that the respondent was a single bus operator while the appellant was a multi bus operator having four stage carriage permits and the second was that one of the stage carriage permits was recently granted to the respondent and hence he was in terms of the 'motor vehicle jurisprudence ' a "recent grantee". Both these circumstances by themselves are not sufficient to constitute such requirement of public interest as to outweigh the higher marks obtained by the appellant. This Court had occasion to consider in Ajantha Transports (P) Ltd.	 Coimbatore vs M/s. T. V. K. Transport	 Pulampatti	 Coimbatore Dist.(1) the relevance of possession of more than one permit as also recent grant in selecting an applicant for grant of permit and Beg	 J.	 speaking on behalf of the Court	 stated the law on the subject in the following words : "It should be clear when the main object	 to which other considerations must yield in cases of conflict	 of the permit issuing powers under sec. 47 of the Act is the service of (1) ; 96 interest of the public generally	 that any particular fact or circumstances	 such as a previous recent grant in favour of an applicant or the holding of other permits by an operator	 cannot by itself	 indicate how it is related to this object. Unless	 there are other facts and circumstance which link it with this object the nexus will not be established. For instance	 an applicant may be a recent grantee whose capacity to operate a transport service efficiently remains to be tested so that a fresh grant to him may be premature. In such a case	 another applicant of tested efficiency may be preferred. On the other hand	 a fresh grantee may have within a short period	 disclosed such superiority or efficiency or offer such amenities to passengers that a recent grant in his favour may be no obstacle in his way at all. Again	 the fact that an applicant is operating other motor vehicles on other permits may	 in one case	 indicate that he had excee ded the optimum	 or	 has a position comparable to a monopolist	 but	 in another case	 it may enable	 the applicant to achieve better efficiency by moving towards the optimum which seems to be described as a "viable unit" in the rules framed in Madras in 1968. Thus	 it will be seen that	 by itself	 a recent grant or the possession of other permits is neither a qualification nor a disqualification divorced from other circumstances which could indicate low such a fact is related to the interests of the public generally. It is only if there are other facts establishing the correlationship and indicate its advantages or disadvantages to the public generally that it will become a relevant circumstance. But	 in cases where everything else is absolutely equal as between two applicants	 which will rarely be the case	 it could be said that an application of principle of equality of oppor tunity	 which could be covered by Article 14	 may enable a person who is not a fresh grantee to obtain a preference. " It would	 therefore	 be seen that the mere fact that an applicant has more than one permit or he is a recent grantee cannot by itself be regarded as a factor against him in the comparative scale. It would all depend on the facts and circumstances of each case. As 'pointed out by Beg	 J.	 in the case just cited : "an applicant may be a recent grantee whose capacity to operate a transport service efficiently remains to be tested so that a fresh grant to him may be premature on the other hand. a fresh grantee may have within a short period disclosed such superiority or efficiency or offer such amenities to passengers that a recent grant in his favour may be no obstacle in his way at all a recent grant could not	 considered by itself and singly	 be	 converted into a demerit". Similarly	 possession of more than one permit also cannot by itself	 divorced from other circumstances	 be regarded as a disqualification. It may in a given case show that the applicant has already reached the viable unit of five stage carriages contemplated under 'clause (3) (F) of rule 155A or that the effect of granting permit to him would be to make him a monopolist on the route a result disfavoured by the decision of this Court in Sri Rama 97 Vilas Service (P) Ltd. vs C. Chandrasekharan & Ors.(1) as being inconsistent with the interest of the general public or	 on the other hand	 it may be a circumstance in his favour enabling him to achieve greater efficiency by moving towards the optimum of viable unit. The learned Single Judge	 was	 therefore	 in error in rejecting the claim of the appellant to the grant of permit by mechanically relying on the circumstance that the appellant was a multi bus operator having four stage carriage permits	 including a recent grant without considering how in the light of the other facts and circumstances	 it was correlated to the question of public interest. There was nothing to show that this circumstance would have	 any prejudicial or adverse impact on public interest	 if permit were granted to the appellant notwithstanding it. The four stage carriage	 permits which the appellant had were not on the same route and there was no question of. any monopoly being created in his favour if the permit applied for by him were granted. In fact	 possession of more than on& permit by the appellant was a circumstance in his favour	 because according to clause (3)(F) of rule 155A an applicant operating in more than four stage carriages would be entitled to one mark for each stage carriage in order to have a viable unit of five carriage. The principle laid down in clause (3) (F) of rule 155A proceeds on the hypothesis that an applicant would be able to achieve greater efficiency if he has a larger number of stage carriages	 but it sets a limit of five stage carriages as it was thought that that would be sufficient to constitute a viable unit which could legitimately be permitted to an applicant	 consistently with the requirement of a socialistic pattern of society that there should be distributive or social justice and no undue economic disparities. So long	 therefore	 as an applicant has not more than four stage carriages	 it cannot by itself be regarded as a factor against him and	 as pointed out by Beg	 J.	 in the case cited above	 the rule in clause (3) (F) of rule 155A providing for giving of one mark to the applicant for each stage carriage operated by him should be taken into account unless there is good enough reason to depart from it. "Every additional stage carriage upto four would give an applicant an additional mark so as to help him to make up a viable unit of five". The State Transport Appellate Tribunal was	 therefore	 right	 in the circumstances of the case	 in not regarding possession of four stage carriage permits by the appellant	 including a recent grant	 as a circumstance against him	 but treating it as a circumstance in his favour by adding four marks under clause (3) (F) of rule 155A	 and the learned Single Judge acted erroneously in upsetting this view taken by the State Transport Appellate Tribunal. The learned Single Judge was also in error in holding	 thatthe same standard was not applied by the State Transport AppellateTribunal in comparing the history sheets of the appellant and therespondent. The history sheet of the appellant related only to hisperformance as stage carriage operator and the entire history sheetwas before the State Transport Appellate Tribunal and it showedthat the appellant had a clean record. On the other hand	 the respondent (1) ; L379 Sup. CI/75 98 had two history sheets	 one relating to his performance as stage carriage operator and the other relating to his performance as lorry operator and both the history sheets showed adverse entries. It can hardly be disputed that this comparison with reference to the past performance of the appellant and the respondent was relevant to the question as to who between the two should be selected for grant of permit. It may be that the history sheet of the respondent as lorry operator related to a period of ten years while that of the appellant as a stage carriage	 perator covered a shorter period	 but that cannot be helped. The comparison has to be made on the basis of the available material and if the history sheet of the respondent	 which may be for a longer period	 shows that the past performance of the respondent 'was not satisfactory while the history sheet of the appellant	 though for a shorter period	 shows that he has had a clean record of performance	 that would certainly be a relevant circumstance to lie taken into ;account. The State Transport Appellate Tribunal was plainly right in relying on this circumstance	 amongst others	 for the purpose of preferring the appellant to the respondent. Before we part with this case we may point out that the learned Single	 Judge overstepped the limits of his revisional jurisdiction and treated the revision application before him as if it wore an appeal. That was clearly impermissible as the revisional jurisdiction of the High Court under section 64B is as severely restricted as that under section 115 of the Code of Civil Procedure and it is only where there is a jurisdictional error or illegality or material irregularity in the exercise of jurisdiction that the High Court can interfere under section 64B 	with an order made by the State Transport Appellate Tribunal. We must	 therefore	 set aside the judgment of the learned Single Judge and restore the order made by the State Transport Appellate Tribunal granting permit to the appellant. The appeal is accordingly allowed. The respondent will pay the costs to the appellant. P.B.R. Appeal allowed.

The Regional Transport Authority granted a stage carriage permit to the respondent as against the appellant on the ground that the former was a single bus operator while the appellant was an operator having four stage carriage permits	 including a stage carriage permit which was recently granted to him. The State Transport Appellate Tribunal	 on the other hand	 took the view that the respondent did not have a pucca fire proof building for workshop	. that it was immaterial whether the sector experience of the appellant was derived under a temporary permit or a permanent permit; that the appellant was entitled to two marks even though the experience gained by him was by operation of temporary permits	 that the history sheet of the appellant was clean without any adverse remark and that since a portion of the route fell within the interior roads it was desirable in public interest to prefer "an experienced operator instead of single bus operator". The Appellate Tribunal	. therefore	 found that the appellant had superior qualifications and was entitled to be preferred to others. On a revision application under section 64B of the a single Judge of the High Court took the view that public interest required that in the socialist pattern of society monopoly should as far as possible be avoided and a smaller operator with one stage carriage permit should be preferred to a bigger operator having three or more stage carriage permits	 that the appellant was a recent grantee of stage carriage permit; that a proper standard of comparison of the history sheets of the appellant and the respondent had not been made; and that the respondent was entitled to two marks on account of sector experience. The order of the Regional Transport Authority granting permit to the respondent was	 therefore	 restored. Allowing the appeal	 HELD : (1) The High Court was not right in refusing two marks to the appellant. Clause 3(c) of rule 155A provides that two marks shall be awarded to the applicant	 who. on the date of the consideration of the application by the Regional Transport Authority	 has been plying a stage carriage permit on the entire route. It does not contain any restriction that in order to be entitled ' to these two marks the applicant should have been plying on the route on the basis of a permanent permit. What is material is that the applicant should have experience of plying on the route and this experience would be there whether plying is done on a temporary permit or a permanent permit. [94G H] (2) The paramount consideration to be taken into account in determining as to which of the applicants should be selected for grant of permit always is public interest. [95 B C] (3) The mere fact that an applicant has more than one permit or he is a recent grantee cannot by itself be regarded as a factor against him in the comparative scale. Possession of more than one permit also cannot	 by itself	 divorced from other circumstances	 be regarded as a disqualification. [96 F; H] Ajantha Transports (P) Ltd. vs T. Y. K. Transports	 ; 	 followed. The High Court was in error in rejecting the claim of the appellant to the grant of permit by mechanically relying on the circumstance that the 92 appellant was a multi bus operator having four Stage carriage permits including a recent grant without considering how in the light of the other facts and circumstances	 it was correlated to the question of public interest. ' The four stage carriage permits which the appellant had were not on the same route and there was no question of any monopoly being created in his favour if the permit applied for by him was granted. The possession of more than one permit by the appellant was a circumstance in his. favour because according to cl. 3(F) of rule 155A an applicant operating more than four stage carriages would be entitled to one mark. [97B D] (4) The High Court was in error in holding that the same standard was not applied by the State Transport Appellate Tribunal in comparing the history sheets of the appellant and the respondents. [97H] (5) In the instant case the	 High Court overstepped the limits of the revisional jurisdiction and treated the revision application as if it were an appeal. The jurisdiction of the High Court under section 64B is as severely restricted as that under section 115 of the Code of Civil Procedure and it is only where there is a jurisdictional error or illegality or material irregularity in the exercise of jurisdiction that the High Court can interfere under section 64B with an order made by the State Transport Appellate Tribunal. [98D E]