Basic Orientation and Mobility Skills for Visually Impaired Students: Safe Street Crossing on Campus
Oct 14, 2025
The sound of idling engines, the confusing rush of footsteps, the uncertainty of a silent intersection, for a student with a
I understand that fear. I’ve stood at countless curbsides with students, guiding them through this exact process. The truth is, teaching
Understanding the Street Crossing
Before a student even puts a foot on the street, they must first learn to interpret their environment. This sensory awareness is one of the most critical
T-Shaped vs. Plus-Shaped
Plus-Shaped Intersections (+): These are traditional four-way intersections. While they may have more traffic, the flow is often more predictable (e.g., perpendicular traffic).T-Shaped Intersections (T): This is where one street ends as it meets another. Surprisingly, these can be more complex to analyze auditorily because traffic patterns are less conventional. A car turning from the top of the "T" can be harder to detect than one approaching from a straight line.
Essential O&M Terminology You Need to Know
To teach effectively, you need to speak the language of O&M. Here are a few key terms that will be central to your instruction for
Sound Shadow: This is a critical concept. A sound shadow occurs when an object, like a person, a mailbox, or a large tree, blocks or muffles the sound of an approaching vehicle. This is why an instructor shouldnever stand directly in front of the student at the curb. By standing slightly behind and to the side, you ensure they have an unobstructed auditory access of the environment.All Quiet vs. All Clear: These terms are not interchangeable.All Quiet refers to the ambient environmental noise. It means there is no loud construction, no overhead airplanes, and no sirens that could mask the sound of traffic.All Clear means there are no cars currently approaching the intersection that pose a threat. You can have an "All Clear" moment even when it isn't "All Quiet," but the student must be skilled enough to discern the traffic sounds.
Warning Time: This is the amount of time from the moment a student first hears an approaching car to the moment it arrives at the intersection. O&M specialists work with students to judge this timing, which can vary based on the car's speed, weather, and time of day.Truncated Domes & Curb Cuts: These are physical, tactile warnings.Curb cuts are the ramps leading from the sidewalk to the street.Truncated domes are the distinctive, raised bumps (usually yellow) installed at the bottom of these ramps. They are a universal signal required by the ADA to alert pedestrians withvision impairment that they are about to enter a vehicular path.
Pre-Crossing Technique
Where to Stand and Why
It prevents you from creating a sound shadow .It keeps you out of their physical path while remaining close enough to provide verbal prompts or physical support (like a hand on the shoulder) if needed.
Pre-Crossing Cane Technique
The student’s long white cane is their most important tool. Before crossing, there are specific
Establishing a Tactile Boundary: The student can use their cane to find the edge of the curb. This can be done with adiagonal technique (holding the cane diagonally across the body to find the curb edge on the opposite side) or byhooking the curb (placing the cane tip against the curb on the same side as their cane hand). This confirms their exact position relative to the street.The Pre-Movement Signal: Just before stepping off the curb, the student should perform a single, clear sweep of their cane from left to right. This movement is not just for clearing their immediate path; it acts as a visual signal to any nearby drivers, indicating their intention to cross. It makes them more visible and predictable.
The Art of Prompting
How you communicate with
Avoid asking weighted, yes-or-no questions like, "Is it safe to cross now?" This puts immense pressure on the student and encourages them to look to you for the answer. It creates prompt dependency.
"What do you hear?" "Where are the cars coming from?" "Describe the traffic flow to me." "Based on what you hear, when is the safest time to cross?"
Building Confidence and Managing Student Anxiety
Unlocking the Campus Experience
S
This single skill directly impacts a student's entire educational experience. The ability to cross a campus driveway independently grants students the autonomy to join a study group at the library, meet friends at the student union, and explore new parts of campus on their own terms.
Teaching these critical
Related Articles:
- How Do Blind People Know Where They Are? | Differentiating Landmarks vs. Cues
- Using AI at Street Crossings with Michiel Janssen, Founder of OKO
- Accessibility 101: What is an Accessible Pedestrian Signal (APS)?
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