38 C.F.R. § 21.216
(a) General. Special equipment should be authorized as necessary to enable a veteran to mitigate or overcome the effects of disability in pursuing a rehabilitation program. The major types of special equipment which may be authorized include:
(3) Modifications to improve access. This category includes adaptations of environment not generally associated with education and training, such as adaptive equipment for automobiles or supplies necessary to modify a veteran's home to make either training or self-employment possible.
(Authority: 38 U.S.C. 3104(a))
(b) Coordination with other VA elements in securing special equipment. In any case in which the veteran needs special equipment and is eligible for such equipment under other VA programs, such as medical care and treatment at VA medical centers, the items will be secured under that program. The veteran must be found ineligible for needed special equipment under other programs and benefits administered by VA before the item may be authorized under Chapter 31.
(Authority: 38 U.S.C. 3115)