Chapter 5. HIGHWAY TRANSPORTABILITY GUIDANCE

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CHAPTER 5

HIGHWAY TRANSPORTABILITY GUIDANCE

Section II. GENERAL

5-1. Scope

CAUTION

Trucks must not exceed 3 mph during

This chapter provides highway transportability

guidance for movement of the HEMTTs. It covers

loading or unloading operations.

technical and physicial characteristics of HEMTTs,

5-3. General

as well as safety considerations. It also prescribes

Although overwidth permits are required in most

the materials and guidance required to prepare,

load, tie down, and unload the HEMTTs.

areas, the HEMTTs can be transported under

their own power for highway movement in conti-

5-2. Safety

nental United States (CONUS) and overseas areas.

In addition to the safety precautions contained in

The vehicles may also be transported by semi-

chapter 3, movement is subject to all safety laws,

trailers.

rules, and regulations applicable to commercial

carriers. Overseas movements are governed by the-

ater regulations.

Section Il. SELF-PROPELLED MOVEMENT

ever, with assigned payloads, the trucks will en-

5-4. US Highways

counter numerous restrictions throughout Europe

The length, height, weight, and axle loads of the

and will require special permits and selective rout-

HEMTTs are within the legal limits of the inter-

ing. The International Road Federation (IRF),

state highways and those major highways desig-

Geneva, Switzerland, publishes maximum legal di-

nated by the Federal Highway Administration

mensions and weights for highway vehicles in for-

(FHWA) for vehicles 102 inches (2.59 m) wide.

eign countries. Since the HEMTTs do not match

However, the width of the HEMTTs exceeds the

vehicle configurations established by the IRE, as-

width limitation of 96 inches (2.44 m) on all high-

sistance for intheater or incountry clearance for

ways not designated for vehicles 102 inches (2.59

m) wide by the FHWA and will require permits for

dimensions and vehicle weights can be obtained

movement (AR 55162). With assigned payloads,

from the 4th Transportation Command, Oberursel,

the trucks will encounter many restrictions for

Germany.

gross vehicle weight and tandem axle loads. How-

5-6. Other Countries

ever, most restrictions can be resolved by permits.

Where maximum permit limits are exceeded, certi-

The HEMTTs (without payloads) may encounter

fication as "essential to the national defense" may

width restrictions in certain countries, but world-

be required.

wide restrictions are minimal. With assigned pay-

loads, the trucks will encounter numerous restric-

5-5. European Highways

tions and require permits and selective routing.

Movement restrictions of the HEMTTs (without

payloads) will be minimal except for width. How-

Section Ill. TRANSPORT BY SEMITRAILER

will be required because size and weight limita-

5-7. General

tions will be exceeded. One army semitrailer that

The HEMTTs can be transported over highways by

can transport the HEMTTs is the M872 towed by

military or commercial semitrailers of adequate

the M915 truck-tractor. However, movement of the

size and capacity. This section provides for the

HEMTT load by semitrailer will be restricted be-

movement of a disabled vehicle or the movement

cause of the width, gross vehicle weight, and

of the HEMTT for administrative or logistical pur-

tandem axle weights.

poses. In CONUS and in overseas areas, permits

5-1