Can anyone tell me special allowance exceptions limits.

Hi , allowance as mentioned by you are  the allowance as exempted under the provision of section 10(13) . These are not the special allowances and are being exempted to the extent of expenditure incurred or allowance received whichever is less .However , there are other allowances such as children education allowance , border area allowance , underground allowance , for which limit has been specified and for these you need to refer rule 2BB of income tax rules 1962.

https://law.incometaxindia.gov.in/DIT/File_opener.aspx?page=ITRU&schT=rul&csId=01474617-a811-4e9e-86d2-01b2e5eca954&rNo=&sch=&title=Taxmann%20-%20Direct%20Tax%20Laws