UFC 4-022-01
25 May 2005
7-4.1
Geometric Design of Roadways
Design roadways in a Large Vehicle Inspection Facility in accordance with the
guidelines provided in Section 6-6 and the latest edition of the AASHTO Policy on
Geometric Design of Highways and Streets except as modified in this section.
Additionally, consider the requirements to support oversized, atypical vehicles such as
those frequently encountered during construction operations.
7-4.1.1 Channelization Islands
The minimum raised channelization island should be 5 ft (1.5 m) wide, 6 in (152 mm)
high and 50 ft (15.2 m) long. A channelization island should be provided between each
incoming traffic lane. These islands provide a safe position for security personnel and a
location to mount present/future vehicle inspection devices.
7-4.1.2 Lane Width
The minimum lane width should be 16 ft (4.9 m) in the inspection area. A preferred lane
width of 18 ft (5.5 m) is recommended. The increased lane widths are required to
facilitate manual inspection procedures and to support the potential for future automated
inspection technology. Outside of the inspection area, the minimum lane width
facilitating the flow of traffic and other operations, is 12 ft (3.6 m).
AF
Inspection areas should be a minimum of 18 x 80 ft (5.5 x 24.4 m) x 17 feet 6 in
(5.4 m) high that can be enclosed to protect inspection equipment in the event of bad
weather.
7-4.1.3 Vertical Clearances
In order to support potential over height vehicles or future pavement overlays a
minimum vertical clearance of 17 ft (5.2 m) should be maintained throughout the
inspection facility. Higher clearance may be desirable for inspection equipment.
AF
Provide a minimum clear height of 17 ft 6 in (5.4 m).
7-5
FACILITIES
Develop facilities in accordance with the guidelines provided in paragraph 6-9 except as
modified in the following sections.
7-5.1
Inspection Office
The inspection office serves as the central control center for the truck inspection station
and provides shelter for security personnel. Every truck inspection station should have
an inspection office. As the control center, the inspection office controls the vehicle
barricades, traffic control devices, access controls, and lighting. The office should
include space for the following equipment and functions:
7-19
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