Dash cams are legal in Massachusetts but subject to strict mounting and privacy rules. Tenants should prioritize compliance to avoid tickets or inadmissible footage.
Mounting Requirements
Massachusetts prohibits dash cams on the windshield if they obstruct the driver’s view or use nontransparent materials, per MGL Chapter 90, Section 9D. Mount on the dashboard, behind the rearview mirror, or side windows (reflecting no more than 35% light).
Devices must not impair visibility; police can issue fix-it tickets ($50–$100) for violations. Suction-cup mounts near the top are sometimes tolerated if minimal obstruction occurs.
Audio Recording Rules
As a two-party consent state (MGL Chapter 272, Section 99), all vehicle occupants must agree to audio recording. Notify passengers verbally or via signage; disable audio otherwise to stay legal.
Video-only in public spaces is fine, but private property (e.g., driveways) requires permission. Secret audio taps risk felony wiretap charges.
Usage and Evidence
No mandate exists for personal vehicles, though fleets often use them. Footage is admissible in court if legally obtained, aiding insurance claims or disputes.
Commercial drivers follow FMCSA guidelines; police cruisers have exemptions. Altering accident footage is illegal.
Exceptions and Penalties
Tinted windows compound issues—side tints max 35% VLT. Rental cars may restrict mods; check agreements.
Violations yield civil fines; repeat offenses escalate. Dash cams don’t trigger distracted driving laws if passive.
Practical Tips
Choose compact models like Nextbase or Garmin with dashboard adhesive. Test angles pre-install. Back up footage securely.
For fleets, post “Recording in Progress” stickers. Consult RMV or local PD for edge cases. Updates rare, but monitor Mass.gov for 2026 tweaks.
SOURCES :
- https://www.ddpai.com/blog/dash-cam-laws/
- https://www.reddit.com/r/massachusetts/comments/1g8cblf/dashcams_are_illegal_on_windshields/
