The Web Experience for People with Disabilities

ADA Trainer Network

Module 7e

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Trainer’s Name

Trainer’s TitlePhone

Email/Website Address

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DisclaimerInformation, materials, and/or technical assistance are intended solely as informal guidance, and are neither a determination of your legal rights or responsibilities under the ADA, nor binding on any agency with enforcement responsibility under the ADA. The Mid-Atlantic ADA Center is authorized by the National Institute on Disability and Rehabilitation Research (NIDRR) to provide information, materials, and technical assistance to individuals and entities that are covered by the ADA. The contents of this document were developed under a grant from the Department of Education, NIDRR grant number H133 A110020. However, those contents do not necessarily represent the policy of the Department of Education, and you should not assume endorsement by the Federal Government.

People who are Blind• Do not use a mouse• May use a screen

reader to listen to the content

• May use a refreshable Braille display

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All content must be accessible from the keyboard only

Images, photos and graphics are unusable

Colors are unusable Navigation may be

difficult / confusing

VideoVideo by AccessIT

Surfing the Web with a Screen Reader

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People with Low Vision• May use screen

magnification software• Only a small portion of

the screen is seen at a time

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Images, photos and graphics may become unusable when enlarged

Navigation may be difficult / confusing if it occurs in multiple locations along the outer edges of the web page

Color Blindness• Approximately 8-10% of

the male population and about 0.5% of the female population experience some form of color deficiency.

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Reds and greens are often indistinguishable

Other colors may be indistinguishable

Color Blindness: Simulation

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Map of Hurricane Isabel (with color)

Color Blindness: Simulation

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Map of Hurricane Isabel (with red/green colorblindness)

Simulated using Vischek (http://www.vischeck.com/vischeck/vischeckURL.php )

Dairy

Beverages

Confections

Meat/Poultry

Seafood

Grains/Cereals

Condiments

Produce

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DairyBeveragesConfectionsMeat/PoultrySeafoodGrains/CerealsCondimentsProduce

People withMobility Impairments

• May use only the keyboard for navigation

• May tire quickly• May not have fine

motor control when using a mouse

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All content must be accessible from the keyboard

Lengthy navigation may cause fatigue

Small or moving links are difficult to select

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Mobility Impairments:Assistive Technology

• Head wand

• Adaptive Keyboard

• Mouth stick

VideoVideo from Web Access Toolkit

Mobility Impairment

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People who are Deaf orHard of Hearing

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Access Considerations

Video clips that include audio are unusable

Audio clips are unusable

Video

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Deafness and Hard of Hearing

People with Cognitive Impairments• May be easily

distracted

• Complex layouts may lead to confusion

• Text-only content may be limiting

Animated images may be distracting

May be difficult to identify important content on a busy page

Use graphics when they support content

Use recognizable key words

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People withPhotosensitive Epilepsy

• Strobe or flickering content may cause seizures

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Access Board, 2001

• Avoid causing the screen to flicker with a frequency greater than 2 Hz and lower than 55 Hz

Mid-Atlantic ADA CenterTransCen, Inc.

401 North Washington Street, Suite 450Rockville, MD 20850

Toll-Free: 800.949.4232 (DC, DE, MD, PA, VA, WV)

Telephone 301-217-0124Fax 301-251-3762TTY 301-217-0124Email ADAinfo@transcen.orgWeb www.ADAinfo.org

The contents of this presentation were developed under a grant from the Department of Education, NIDRR grant number H133 A110020. However, those contents do not necessarily represent the policy of the Department of Education, and you should not assume endorsement by the Federal Government.

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