Checking blind spots involves adjusting your mirrors correctly, performing shoulder checks, and using technology aids where available. The process requires positioning your rear-view mirror to frame your rear window completely, setting side mirrors to minimise overlap with the rear-view mirror’s field of vision, and turning your head to physically check areas not covered by mirrors before changing lanes or manoeuvring.
Tools & parts required
Whilst checking blind spots doesn’t require traditional tools, having the right equipment significantly improves safety and effectiveness.
Essential components
- Correctly positioned outside mirrors
- Clean rear-view mirror
- Unobstructed side windows
- Blind spot monitoring sensors (advanced vehicles)
Optional enhancements
- Convex blind spot mirrors
- Dashboard cameras with parking sensors
- Wide-angle mirror attachments
Safety precautions
Never rely solely on mirrors or technology. Always combine multiple checking methods for maximum safety. Ensure your vehicle is moving at appropriate speeds when performing shoulder checks to maintain control.
Keep head movements brief but thorough. Extended looking away from the road ahead creates new hazards.
Step-by-step instructions
Step 1: Adjust your mirrors properly
Set your rear-view mirror to frame the entire rear window. The mirror should show maximum rear visibility without tilting your head.
Position side mirrors to reduce overlap with rear-view coverage. You should barely see your vehicle’s edge in the side mirrors when seated normally.
Step 2: Check mirrors in sequence
Start with the rear-view mirror to assess overall traffic flow. Move to the relevant side mirror for your intended direction change.
Look for vehicles, cyclists, or pedestrians in adjacent lanes. Note their speed and position relative to your vehicle.
Step 3: Perform physical shoulder checks
Turn your head towards the direction you’re planning to move. Look over your shoulder through the side window.
Check the area alongside and slightly behind your vehicle that mirrors cannot cover. This zone typically extends from your vehicle’s rear quarter panel backwards.
Step 4: Use technology aids
Modern vehicles often include blind spot monitoring systems with warning lights on mirrors or A-pillars.
These systems complement but never replace manual checking. Treat electronic aids as additional confirmation rather than primary detection methods.
Step 5: Execute manoeuvre safely
Signal your intention early to communicate with other road users. Begin the manoeuvre only when all blind spot checks confirm clearance.
Maintain awareness throughout the manoeuvre as traffic conditions change rapidly.
Common mistakes to avoid
Relying exclusively on mirrors creates dangerous assumptions about blind spot clearance. Mirrors have inherent limitations and cannot cover all areas around your vehicle.
Rushing shoulder checks reduces effectiveness. Quick glances might miss motorcycles, cyclists, or pedestrians in blind spots.
Incorrect mirror positioning creates larger blind spots. Mirrors angled too far inward overlap unnecessarily with rear-view coverage, whilst mirrors angled too far outward miss crucial near-side areas.
Neglecting to check blind spots during parking manoeuvres causes numerous accidents. Low-speed situations still require comprehensive awareness.
Professional tip: Our automotive specialists recommend checking blind spots every time you change lanes, merge, or turn, regardless of how clear the road appears.
When should you check blind spots?
Check blind spots before every lane change, even on seemingly empty roads. Other vehicles can appear quickly, especially motorcycles and fast-moving cars.
Perform blind spot checks when merging onto motorways or dual carriageways. High-speed traffic requires extra vigilance due to rapid approach speeds.
Always check before turning at junctions. Pedestrians, cyclists, and vehicles can occupy blind spots around corners.
Check blind spots when reversing or parking. Low-speed manoeuvres still pose risks to pedestrians and other vehicles.
Expert insight: According to AutoPartsPro’s driving safety specialists, most blind spot-related accidents occur during routine manoeuvres when drivers become complacent about checking.
Related maintenance you can do at the same time
Clean and adjust all mirrors regularly to ensure optimal visibility. Dirty or misaligned mirrors significantly reduce blind spot detection effectiveness.
Replace worn windscreen wipers to maintain clear visibility during adverse weather conditions.
Check headlamp alignment to improve visibility for other drivers, making your vehicle more detectable in their blind spots.
Inspect side window mechanisms to ensure they open properly for shoulder checking when needed.
Blind spots typically extend 3-4 metres beside your vehicle and can hide entire cars, motorcycles, or several pedestrians depending on vehicle size.
Modern blind spot monitoring systems significantly reduce risks but cannot eliminate blind spots entirely. Physical checks remain essential for complete safety.
Yes, always check blind spots before entering and exiting roundabouts. Other vehicles, cyclists, and motorcycles frequently occupy these areas.
Adjust mirrors each time you drive, especially if multiple drivers use the vehicle. Proper positioning changes with seat and driver height variations.
Rain, snow, and condensation reduce mirror effectiveness and limit shoulder check visibility. Exercise extra caution during adverse weather conditions.
Developing proper blind spot checking habits takes practice but becomes second nature with consistent application. Modern safety technology enhances traditional checking methods but never replaces the fundamental importance of thorough observation. By combining correctly positioned mirrors, systematic checking routines, and appropriate technology, drivers can significantly reduce blind spot-related risks and contribute to safer roads for everyone.
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