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SF506 • 2026

A bill for an act relating to raw farm products for purposes of increased gross weight for motor vehicles transporting such products on this state’s public highways.(Formerly SSB 1109 .)

A bill for an act relating to raw farm products for purposes of increased gross weight for motor vehicles transporting such products on this state’s public highways.(Formerly SSB 1109 .)

Agriculture
Passed Legislature

This bill passed both chambers and reached final enrollment, even if later executive action is not shown here.

Sponsor
COMMITTEE ON TRANSPORTATION
Last action
2026-01-21
Official status
Placed on calendar.
Effective date
Not listed

Plain English Breakdown

Using official source text because the generated explanation was unavailable or could not be confirmed against the official bill text.

A bill for an act relating to raw farm products for purposes of increased gross weight for motor vehicles transporting such products on this state’s public highways.(Formerly SSB 1109 .)

A bill for an act relating to raw farm products for purposes of increased gross weight for motor vehicles transporting such products on this state’s public highways.(Formerly SSB 1109 .)

What This Bill Does

  • A bill for an act relating to raw farm products for purposes of increased gross weight for motor vehicles transporting such products on this state’s public highways.(Formerly SSB 1109 .)

Limits and Unknowns

  • This entry is temporarily using official source text because the generated explanation could not be confirmed against the official bill text during the last sync.

Bill History

  1. 2026-01-21 Iowa Legislature

    Placed on calendar.

  2. 2026-01-21 Iowa Legislature

    Committee report, approving bill. S.J. 125 .

  3. 2026-01-20 Iowa Legislature

    Subcommittee recommends passage.

  4. 2026-01-15 Iowa Legislature

    Subcommittee Meeting: 01/20/2026 2:30PM Room 315.

  5. 2026-01-15 Iowa Legislature

    Subcommittee: Zumbach, Shipley, and Townsend. S.J. 106 .

  6. 2026-01-15 Iowa Legislature

    * * * * * END OF 2025 ACTIONS * * * * *

  7. 2025-06-16 Iowa Legislature

    Referred to Transportation. S.J. 1057 .

  8. 2025-03-04 Iowa Legislature

    Committee report, approving bill. S.J. 411 .

  9. 2025-03-04 Iowa Legislature

    Introduced, placed on calendar. S.J. 402 .

Official Summary Text

A bill for an act relating to raw farm products for purposes of increased gross weight for motor vehicles transporting such products on this state’s public highways.(Formerly SSB 1109 .)

Current Bill Text

Read the full stored bill text
Senate

File

506

-

Introduced

SENATE

FILE

506

BY

COMMITTEE

ON

TRANSPORTATION

(SUCCESSOR

TO

SSB

1109)

A

BILL

FOR

An

Act

relating

to

raw

farm

products

for

purposes

of

increased

1

gross

weight

for

motor

vehicles

transporting

such

products

2

on

this

state’s

public

highways.

3

BE

IT

ENACTED

BY

THE

GENERAL

ASSEMBLY

OF

THE

STATE

OF

IOWA:

4

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506

Section

1.

Section

321.460,

Code

2025,

is

amended

to

read

1

as

follows:

2

321.460

Spilling

loads

on

highways.

3

A

vehicle

shall

not

be

driven

or

moved

on

any

highway

by

4

any

person

unless

such

vehicle

is

so

constructed

or

loaded

or

5

the

load

securely

covered

as

to

prevent

any

of

its

load

from

6

dropping,

sifting,

leaking,

or

otherwise

escaping

or

its

load

7

covering

from

dropping

from

the

vehicle,

except

that

sand

may

8

be

dropped

for

the

purpose

of

securing

traction,

or

water

or

9

other

substance

may

be

sprinkled

on

a

roadway

in

cleaning

or

10

maintaining

such

roadway.

The

provisions

of

this

section

shall

11

not

apply

to

vehicles

loaded

with

hay

or

stover

or

the

products

12

listed

in

section

321.466,

subsections

subsection

4

and

5

.

13

Sec.

2.

Section

321.466,

subsections

4,

5,

and

6,

Code

2025,

14

are

amended

to

read

as

follows:

15

4.

a.

A

Except

as

otherwise

provided

in

paragraph

“b”

,

a

16

person

shall

not

operate

a

motor

truck,

trailer,

truck

tractor,

17

road

tractor,

semitrailer,

or

combination

thereof,

or

any

such

18

vehicle

equipped

with

a

transferable

auxiliary

axle

or

axles,

19

on

the

public

highways

with

a

gross

weight

exceeding

the

gross

20

weight

for

which

it

is

registered

by

more

than

five

percent

;

21

provided,

however,

that

any

.

22

b.

A

person

may

operate

a

vehicle

or

vehicle

combination

23

referred

to

in

this

subsection

,

paragraph

“a”

while

carrying

a

24

load

of

raw

farm

products,

soil

fertilizers

including

ground

25

limestone,

raw

dairy

products,

livestock,

live

poultry,

or

26

eggs,

or

soil

amendments,

or

a

special

truck

,

while

carrying

a

27

load

of

distillers

grains,

may

be

operated

with

a

gross

weight

28

of

up

to

twenty-five

percent

in

excess

of

the

gross

weight

for

29

which

it

is

registered.

However,

this

subsection

paragraph

30

shall

not

be

construed

to

allow

the

operation

of

a

special

31

truck

on

the

public

highways

with

a

gross

weight

exceeding

the

32

maximum

gross

weight

allowed

under

section

321.463,

subsection

33

6

.

34

c.

As

used

in

paragraph

“b”

,

“raw

farm

product”

includes

but

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506

is

not

limited

to

any

of

the

following:

1

(1)

Animals

that

are

dead.

2

(2)

Blood.

3

(3)

Corn,

including

ear

corn

and

hybrids,

shelled

corn,

and

4

corn

cobs.

5

(4)

Cream

that

is

separated.

6

(5)

Distillers

grain,

either

dried

or

wet.

7

(6)

Eggs,

including

fresh

or

frozen

in

the

shell.

8

(7)

Flax

or

flax

seed.

9

(8)

Fodder.

10

(9)

Fruits

or

berries,

that

are

fresh.

11

(10)

Grains,

either

threshed

or

unthreshed.

12

(11)

Hair.

13

(12)

Hay,

either

baled

or

loose.

14

(13)

Hides.

15

(14)

Honey,

either

in

a

comb

or

extracted.

16

(15)

Livestock.

17

(16)

Manure.

18

(17)

Melons.

19

(18)

Nursery

stock.

20

(19)

Peat.

21

(20)

Potatoes.

22

(21)

Poultry

that

are

alive.

23

(22)

Raw

milk

or

raw

dairy

products.

24

(23)

Saw

logs.

25

(24)

Sod.

26

(25)

Soybean

meal,

either

dried

or

wet.

27

(26)

Soybeans.

28

(27)

Straw,

either

baled

or

loose.

29

(28)

Vegetables

that

are

fresh.

30

(29)

Wood,

either

cord

or

stove.

31

(30)

Wool.

32

d.

The

department

may

adopt

rules

setting

forth

additional

33

raw

farm

products

subject

to

paragraph

“b”

.

34

5.

e.

For

the

purposes

of

this

section

As

used

in

paragraph

35

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506

“b”

,

cracked

or

ground

soybeans,

sorgo,

corn,

wheat,

rye,

1

oats,

or

other

grain

shall

be

deemed

to

be

a

raw

farm

products

2

product

,

provided

that

such

products

are

product

is

being

3

directly

and

immediately

delivered

to

a

farm

,

from

the

place

4

where

the

whole

grain

had

been

delivered

from

a

farm

for

the

5

purpose

of

cracking

or

grinding

and

immediate

delivery

to

6

the

farm

to

which

such

cracked

or

ground

products

are

being

7

delivered

.

8

f.

As

used

in

paragraph

“b”

,

“soil

amendment”

means

any

9

substance,

or

a

mixture

of

substances,

intended

to

improve

10

the

physical,

chemical,

biochemical,

biological,

or

other

11

characteristic

of

soil,

except

a

fertilizer,

agricultural

12

liming

material,

unmanipulated

animal

manure,

unmanipulated

13

vegetable

manure,

or

pesticide.

14

6.

5.

The

A

truck

operator

shall

have

in

the

truck

15

operator’s

possession

a

receipt

showing

place

of

processing

on

16

the

return

trip.

17

EXPLANATION

18

The

inclusion

of

this

explanation

does

not

constitute

agreement

with

19

the

explanation’s

substance

by

the

members

of

the

general

assembly.

20

BACKGROUND.

Current

law

prohibits

a

person

from

operating

21

a

motor

truck,

trailer,

truck

tractor,

road

tractor,

or

22

semitrailer

having

a

gross

weight

that

exceeds

the

vehicle’s

23

registered

gross

weight

by

5

percent.

An

exception

allows

such

24

a

vehicle

transporting

certain

loads

associated

with

farming

25

to

operate

on

the

public

highways

so

long

as

the

gross

weight

26

does

not

exceed

the

vehicle’s

registered

gross

weight

by

25

27

percent.

Loads

subject

to

this

exemption

include

raw

farm

28

products,

fertilizers,

raw

dairy

products,

livestock,

live

29

poultry,

and

eggs.

“Raw

farm

product”

is

defined

by

department

30

of

transportation

(DOT)

rule

to

include

a

list

of

commodities,

31

including

live

poultry

and

eggs

(761

IAC

400.47).

Another

32

statutory

exemption

provides

that

cracked

or

ground

grain

33

may

be

considered

a

raw

farm

product

if

it

is

being

directly

34

delivered

between

farms

for

purposes

of

cracking

or

grinding.

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BILL’S

PROVISIONS.

This

bill

codifies

the

list

of

raw

1

farm

products

adopted

by

DOT

rule

entitled

to

be

transported

2

subject

to

the

additional

25

percent

registered

gross

weight

3

exception.

The

bill

strikes

the

statutory

terms

raw

dairy

4

products,

livestock,

live

poultry,

and

eggs

from

the

statutory

5

exemptions

and

adds

them

into

the

codified

list

of

raw

farm

6

products.

The

bill

also

adds

manure,

soybean

meal,

and

wet

7

or

dry

distillers

grains

to

that

list.

DOT

may

adopt

rules

8

setting

forth

additional

raw

farm

products

subject

to

the

9

exception.

In

addition,

the

bill

adds

soil

amendments,

defined

10

in

the

bill,

to

the

list

of

loads

subject

to

the

exception.

11

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