Conn. Agencies Regs. § 14-275b-134
As used in sections 14-275b-135 to 14-275b-149, inclusive, of the Regulations of Connecticut State Agencies, the following vehicle classes will have the following meanings:
| CLASS OF VEHICLE | VEHICLE TYPE |
| HS | A school bus. |
| HS-1 | A Type I school bus equipped to accommodate students with mobility impairments. |
| HS-2 | A Type II school bus equipped to accommodate students with mobility impairments. |
| HB | A bus other than a school bus equipped to accommodate students with mobility impairments. |
| HV | A van-type vehicle. |
| HV-1 | A van-type vehicle without modifications to the headroom of a manufactured body equipped to accommodate students with mobility impairments. |
| HV-2 | A van-type vehicle with modifications to the head room of a manufactured body equipped to accommodate students with mobility impairments. |
| HP | A passenger vehicle with a minimum wheelbase specified in Section 14-275a of the Connecticut General Statutes equipped to accommodate students with mobility impairments. |
(Effective December 18, 1992)