yes there are some quota fixed in trains for handicapped persons.The class and Concession amount is mentioned below
follow the following procedure
1) Fill this form accordingly
2)take a photo copy of orignal Handicapped certificate with Authority required for availing concession
3)...
more...

when the booking clerk asks for the proof then give both photocopy and orignal one
4) be sure that STAMP and Signature of respected Officer is clear can be identified
+++++++++++++++++++++++++++++++++++++++++++++
Lower Birth Is reserved for handicap quota in many trains
+++++++++++++++++++++++++++++++++++++++++++++
CONCESSIONS FOR HANDICAPPED PEOPLE
1) For Orthopaedically Handicapped/ Paraplegic persons who cannot
travel without an escort.
50% in 1AC & 2AC and
75% in other classes in basic mail/express fares.
25% in 3-AC and CC of Rajdhani/ Shatabdi trains
(for both)
Authority required for availing concession:-Certificate issued by a Govt.
Doctor in prescribed proforma
+++++++++++++++++++++++++++++++++++++++++++++
2) for Mentally retarded persons who cannot travel without an escort.
50% in 1AC&2AC and 75% in other classes in basic mail/express fares. (for both)
Authority required for availing concession:-Certificate issued by a Govt.
Doctor in prescribed proforma
++++++++++++++++++++++++++++++++++++++++++++++
3) Deaf and Dumb persons (both
afflictions together in the same person) (Escort to Deaf and Dumb, if accompanying, allowed same concession)
50% 50%
Authority required for availing concession:-Certificate in prescribed proforma
issued by Govt. Doctor
4) Cancer patients travelling alone or with an escort
For cancer Patients-100% concession in 3AC & SL, 75% concession in II, I, AC-CC and 50% concession in 2AC and 1AC classes.
For escorts-75% concession inII, SL, I, AC-CC and 3-AC and 50% in 1 AC
and 2 AC.
Authority required for availing concession:-Certificate in prescribed form issued
by Officer-in-charge of the concerned recognised hospital
[On being called by some recognised hospital for treatment / periodical
check-up and return]
+++++++++++++++++++++++++++++++++++++++++++++
5) Thalassemia patients travelling alone or with an escort
100% concession in 3AC & SL, 75% concession in II, I, AC-CC and 50% concession in 2AC and 1AC classes.
For escorts-75% concession inII, SL, I, AC-CC and 3-AC and 50% in 1 AC
and 2 AC.
Authority required for availing concession:-Certificate in prescribed form issued
by Officer-in-charge of the concerned recognised hospital
[On being called by some recognised hospital for treatment / periodical
check-up and return]
+++++++++++++++++++++++++++++++++++++++++++++++
6) Heart patients travelling alone or with escort
100% concession in 3AC & SL, 75% concession in II, I, AC-CC and 50% concession in 2AC and 1AC classes.
For escorts-75% concession inII, SL, I, AC-CC and 3-AC and 50% in 1 AC
and 2 AC.
Authority required for availing concession:-Certificate in prescribed form issued
by Officer-in-charge of the concerned recognised hospital
[On being called by some recognised hospital for Heart Surgery and return]
++++++++++++++++++++++++++++++++++++++++++++++++
7) Kidney patients travelling alone or with an escort
100% concession in 3AC & SL, 75% concession in II, I, AC-CC and 50% concession in 2AC and 1AC classes.
For escorts-75% concession inII, SL, I, AC-CC and 3-AC and 50% in 1 AC
and 2 AC.
Authority required for availing concession:-Certificate in prescribed form issued
by Officer-in-charge of the concerned recognised hospital
[On being called by some recognised hospital for Dialysis / Kidney
transplant operation and return]
+++++++++++++++++++++++++++++++++++++++++++++++
8) T.B./Lupus Vulgaris patients travelling alone or with an escort
75% (for both)
Authority required for availing concession:-Certificate in prescribed form issued
by Officer-in-charge of the concerned recognised hospital
[On being called by some recognised hospital for treatment / periodical
check-up and return]
+++++++++++++++++++++++++++++++++++++++++++++++
9)Non-infectious Leprosy patients
75%
Authority required for availing concession:-Certificate in prescribed form issued
by Officer-in-charge of the concerned recognised hospital
[On being called by some recognised hospital for treatment / periodical
check-up and return]
+++++++++++++++++++++++++++++++++++++++++++++++
10) Haemophilia Patients - Severe and Moderate form
7 5 % concession in II, SL, AC CC, First and AC 3
Authority required for availing concession:- Certificate in prescribed proforma
issued by Officer-in-charge of the concerned recognised hospital.
[On being called by some recognised hospital for treatment / periodical
check-up and return]
++++++++++++++++++++++++++++++++++++++++++++++
11) AIDS patients
50% in second class
Authority required for availing concession:-Certificate in prescribed form from
Officer-in-charge of the concerned ART Centre
[On being called for treatment in nominated ART Centers]