Service vehicle

An over the highway service vehicle comprising:

• a) a cab defining a compartment for an operator and at least one passenger, the compartment having an access opening;
• b) a door having upper and lower sections and a hinge interconnecting the sections;
• c) the door being pivotally connected to the cab for selectively closing the opening;
• d) the door being pivotal relative to the cab to closed, partially open and full open positions;
• e) the door sections being shiftable between aligned and substantially juxtaposed conditions;
• f) a tether connected to the cab and the lower section and sized to limit door shifting between the closed and partially open positions when the sections are in the aligned condition;
• and
• g) the tether being sized and positioned to permit the door to be shifted to the full open position when the sections are in the substantially juxtaposed condition.

A door for a service vehicle, the door comprising:

• a) an upper section including a window opening;
• b) a lower section pivotally connected to the upper section and moveable between a section aligned condition for door closure and a section juxtaposed condition for use when the door is in a full open position;
• c) latching for securing the sections together when the sections are in the juxtaposed condition and securing the door to the vehicle when the section are in the juxtaposed condition;
• d) a tether connected to the lower section and connectable to the vehicle for limiting door opening to partial opening when the sections are in the aligned condition and permitting full open when the sections are in the juxtaposed condition.

A process of controlling the extent of opening of an articulated access door to an occupant space in a cab of a service vehicle comprising:

• a) opening the door while limiting the opening of the door when upper and lower sections of the door are vertically aligned by extending a tether between one anchor secured to the lower section and another anchor secured to the cab at an elevation above an axis of section articulation;
• b) pivoting the lower section about the axis to juxtapose the sections and bring the one anchor above the axis thereby extending the effective horizontal length of the tether;
• and,
• c) while the sections are juxtaposed moving the door to a full open position.