Failing to use the lanes designated by official signs or road markings for specific traffic directions or vehicle types.
This guide is for general educational purposes only and does not constitute legal advice. TicketClear is a self-help document preparation service — we are not attorneys and do not represent clients. Review all prepared documents carefully before submitting. Fine amounts are estimates and vary by county and surcharge schedule.
This violation occurs when you fail to drive in lanes specifically designated for certain types of vehicles or traffic, such as carpool (HOV) lanes, truck lanes, or slow vehicle lanes. It typically applies when you're driving in a restricted lane without meeting the requirements or when you fail to use a lane you're required to use.
A CVC 21655(a) ticket costs approximately $238 to $350, adds 1 point to your DMV record, and can increase your insurance premiums for 3 to 5 years. That single point can be especially problematic if you're close to license suspension thresholds or drive commercially.
A single point from this violation typically increases insurance premiums by 15-25% for three to five years. Over that period, the total cost in higher premiums often far exceeds the fine itself, making traffic school or contesting the ticket financially worthwhile.
A driver traveling at highway speed on a three-lane freeway stays in the far-left lane marked 'Slower Traffic Keep Right' while driving 10 mph below the flow of traffic.
Officer issues citation for failing to use the designated slow-traffic lane when one was clearly marked.
A truck driver operates a vehicle over 10,000 lbs in the far-left lane of a freeway where signs indicate trucks must use the two right lanes.
Cited for 21655(a) for failing to stay in the designated truck lanes.
A driver moves into a lane marked for buses only during rush hour to avoid congestion.
Receives ticket for using a designated lane without proper authorization.
A driver briefly enters a truck-only lane to safely pass a stalled vehicle on the shoulder before immediately returning to the general lanes.
May have valid defense based on emergency circumstances requiring temporary lane deviation.
These are the defense arguments that appear most often in successful Trial by Written Declarations for this violation.
Lane designation was not clearly marked
CVC 21655(a) requires use of a designated traffic lane. If the lane designation signs or markings were faded, ambiguous, or missing, challenge whether the designation was clearly established.
Correct lane for your vehicle type
Verify whether your vehicle type was required to use a specific lane under the designation in effect.
⚠️ What NOT to Do
Optionally describe your situation — road conditions, time of day, officer position — and get a tailored document preparation overview.
This section applies to any lane designated for specific vehicle types or traffic conditions, including HOV/carpool lanes, truck-only lanes, slow vehicle lanes, and bus-only lanes. The specific designation depends on posted signs and road markings.
CVC 21655(a) is the general designated lane statute, while CVC 21655.5 specifically addresses HOV lane violations. Officers may cite either depending on the circumstances, though 21655.5 often carries higher fines for carpool lane violations.
Simply following other cars is generally not a valid defense. However, if road conditions, construction, or unclear signage caused everyone to use lanes improperly, documenting that situation may support your case.
Brief entry may not be a complete defense unless there was an emergency or safety reason. However, the circumstances matter—if you immediately exited when safe to do so, this context may help your case.
Yes. Commercial drivers face stricter consequences because points on their record can affect their CDL status and employment. The violation itself may also apply more frequently to commercial vehicles required to use specific lanes.
Traffic School Option
Most drivers cited for CVC 21655(a) can attend traffic school to mask the point from their record, provided they haven't attended in the past 18 months and the court approves. You'll still pay the fine, but keeping the point off your record protects your insurance rates.
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This guide is for general educational purposes only and does not constitute legal advice. TicketClear is a self-help document preparation service — we are not attorneys and do not represent clients. Review all prepared documents carefully before submitting. Fine amounts are estimates and vary by county and surcharge schedule.
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