A vehicle comprising: an internal cabin; and a sanitizing system comprising: a plurality of ultraviolet (UV) lamps mounted at various locations within the internal cabin of the vehicle, wherein the UV lamps are configured to receive electrical power from a power source onboard the vehicle and to emit UV light into the internal cabin during a trip of the vehicle; and a control unit including one or more processors and operatively connected to the UV lamps , the control unit configured to modify the electrical power supplied to one or more of the UV lamps located in a common area of the internal cabin based on occupancy of the common area ; wherein responsive to detecting that an occupant of the common area has exited the common area , the control unit is configured to operate the one or more UV lamps located in the common area at a high power level for a designated time period to provide rapid sanitization of the common area ; and wherein the control unit is configured to operate the one or more UV lamps at a lower power level while an occupant is within the common area , unless the occupant enters the common area within the designated time period after a previous occupant exited the common area . an internal cabin; and a sanitizing system comprising: a plurality of ultraviolet (UV) lamps mounted at various locations within the internal cabin of the vehicle, wherein the UV lamps are configured to receive electrical power from a power source onboard the vehicle and to emit UV light into the internal cabin during a trip of the vehicle; and a control unit including one or more processors and operatively connected to the UV lamps , the control unit configured to modify the electrical power supplied to one or more of the UV lamps located in a common area of the internal cabin based on occupancy of the common area ; wherein responsive to detecting that an occupant of the common area has exited the common area , the control unit is configured to operate the one or more UV lamps located in the common area at a high power level for a designated time period to provide rapid sanitization of the common area ; and wherein the control unit is configured to operate the one or more UV lamps at a lower power level while an occupant is within the common area , unless the occupant enters the common area within the designated time period after a previous occupant exited the common area . a plurality of ultraviolet (UV) lamps mounted at various locations within the internal cabin of the vehicle, wherein the UV lamps are configured to receive electrical power from a power source onboard the vehicle and to emit UV light into the internal cabin during a trip of the vehicle; and a control unit including one or more processors and operatively connected to the UV lamps , the control unit configured to modify the electrical power supplied to one or more of the UV lamps located in a common area of the internal cabin based on occupancy of the common area ; wherein responsive to detecting that an occupant of the common area has exited the common area , the control unit is configured to operate the one or more UV lamps located in the common area at a high power level for a designated time period to provide rapid sanitization of the common area ; and wherein the control unit is configured to operate the one or more UV lamps at a lower power level while an occupant is within the common area , unless the occupant enters the common area within the designated time period after a previous occupant exited the common area . <EOS>