Most online tools use broad assumptions. That can be misleading when your crash is shaped by local realities, such as:
- Intersection disputes: Left turns, sudden lane changes, and failure to yield are common sources of fault disagreements.
- Stop-and-go commuter patterns: Rear-end and “stalled traffic” scenarios can change how insurers argue about speed, reaction time, and causation.
- Weather and coastal conditions: Fog, glare, and slick roads can affect visibility and stopping distance—often influencing whether fault is shared.
- Construction and detours: Temporary lane shifts and signage issues can create competing narratives about what riders and drivers reasonably saw and did.
A calculator may estimate damages, but it usually won’t capture whether the insurer will argue comparative negligence under Massachusetts law or dispute how the crash caused your symptoms.


