Write an essay (about 2 pages) to introduce time mean and space mean speed (definition, relationship,

etc.) and explain why space mean speed, not time mean speed, is used for traffic flow analysis. You can

search the articles on the Internet to collect related information (using any format for references you

use). The grading is based on the following rubric (full score is 30 points):

Criteria Inadequate= 2 (Below

Standard)

Adequate= 3

(Meets Standard)

Above Average= 4

(Exceeds

Standard)

Exemplary= 5 (Far

Exceeds Standard)

Organization Writing lacks logical

organization. It shows

some coherence but

ideas lack unity.

Serious errors.

Writing is

coherent and

logically

organized. Some

points remain

misplaced and

stray from the

topic. Transitions

evident but not

used throughout

essay.

Writing is

coherent and

logically

organized with

transitions used

between ideas and

paragraphs to

create coherence.

Overall unity of

ideas is present.

Writing shows

high degree of

attention to logic

and reasoning of

points. Unity

clearly leads the

reader to the

conclusion and

stirs thought

regarding the

topic.

Level of

Content

Shows some thinking

and reasoning but

most ideas are

underdeveloped and

unoriginal.

Content indicates

thinking and

reasoning applied

with original

thought on a few

ideas.

Content indicates

original thinking

and develops ideas

with sufficient and

firm evidence.

Content indicates

synthesis of ideas,

in-depth analysis

and evidences

original thought

and support for the

topic.

Development Main points lack

detailed development.

Ideas are vague with

little evidence of

critical thinking.

Main points are

present with

limited detail and

development.

Some critical

thinking is present.

Main points well

developed with

quality supporting

details and

quantity. Critical

thinking is weaved

into points

Main points well

developed with

high quality and

quantity support.

Reveals high

degree of critical

thinking.

Grammar &

Mechanics

Spelling, punctuation,

and grammatical

errors create

distraction, making

reading difficult;

fragments, comma

splices, run-ons

evident. Errors are

frequent.

Most spelling,

punctuation, and

grammar correct

allowing reader to

progress though

essay. Some errors

remain.

Essay has few

spelling,

punctuation, and

grammatical errors

allowing reader to

follow ideas

clearly. Very few

fragments or run-

ons.

Essay is free of

distracting

spelling,

punctuation, and

grammatical

errors; absent of

fragments, comma

splices, and run-

ons.

Style Mostly in elementary

form with little or no

variety in sentence

structure, diction,

Approaches

college level usage

of some variety in

sentence patterns,

Attains college

level style; tone is

appropriate and

rhetorical devices

Shows outstanding

style going beyond

usual college

level; rhetorical

rhetorical devices or

emphasis.

diction, and

rhetorical devices.

used to enhance

content; sentence

variety used

effectively.

devices and tone

used effectively;

creative use of

sentence structure

and coordination

Format Fails to follow format

and assignment

requirements;

incorrect margins,

spacing and

indentation; neatness

of essay needs

attention.

Meets format and

assignment

requirements;

generally correct

margins, spacing,

and indentations;

essay is neat but

may have some

assembly errors.

Meets format and

assignment

requirements;

margins, spacing,

and indentations

are correct; essay

is neat and

correctly

assembled.

Meets all formal

and assignment

requirements and

evidences

attention to detail;

all margins,

spacing and

indentations are

correct; essay is

neat and correctly

assembled with

professional look.