Massachusetts Rules of the Road: Speed, OUI, and Insurance

The Massachusetts rules of the road combine familiar national driving standards with several state-specific requirements that catch drivers off guard: a hands-free phone law with fines up to $500, four mandatory types of auto insurance, a surcharge-point system instead of traditional license points, and default residential speed limits that many cities have lowered to 25 mph. What follows is a working reference to the laws most likely to affect your daily driving, along with the penalties for getting them wrong.

Right of Way and Turns

When two vehicles reach an intersection at roughly the same time, the driver on the left yields to the driver on the right. A driver turning left must wait for oncoming traffic to clear. At four-way stops, yield first to anyone already in the intersection, then to the driver on your right if you arrived together.¹

Drivers entering a rotary or roundabout yield to vehicles already circulating inside. Right turns on red are permitted after a full stop, once you’ve yielded to pedestrians and cross traffic. On a one-way street, a left turn onto another one-way street is also allowed on red after stopping. A posted sign can ban either turn at a specific intersection.¹

Before turning or stopping in a way that affects another vehicle, you must signal. If your electrical signals aren’t working, a hand signal is required. The fine is at least $25 per offense.²

Pedestrians in Crosswalks

Where a signal isn’t operating, drivers must yield to any pedestrian in a marked crosswalk who is on your half of the road or within 10 feet of your half. You also cannot pass a vehicle that has stopped at a crosswalk to let someone cross. The fine is up to $200, and police are required to investigate any crosswalk injury and issue citations when warranted.³

Speed Limits

Where a road is not otherwise posted, Massachusetts sets these defaults:

30 mph in thickly settled or business districts
40 mph on undivided highways outside those districts
50 mph on divided highways outside those districts
20 mph in designated school zones

These are all written into the same speed regulation statute.⁴

Boston, Cambridge, and other municipalities have lowered the residential default from 30 mph to 25 mph on their own roads, so the 30 mph figure no longer applies everywhere.⁵

Every driver must also travel at a speed that is “reasonable and proper” for conditions. You can be cited for driving too fast for weather, traffic, or visibility even when under the posted limit. Fines double automatically in marked construction zones.⁴

Lane Use and Passing

Stay entirely within a single lane and change lanes only after confirming it is safe.⁶ On multi-lane roads, drive in the lane nearest the right except when overtaking or preparing for a left turn. Breakdown lanes and shoulders are not travel lanes unless signs say otherwise.⁷

Motorcyclists may ride two abreast in a single lane but cannot pass another motor vehicle within the same lane. Lane splitting is not legal. Motorcyclists must ride single file when passing.⁶

Hands-Free and Distracted Driving

Holding any electronic device while driving is prohibited. Your phone must be mounted to the windshield, dashboard, or center console and operated by voice command or a single tap. GPS navigation is fine when the device is properly mounted.⁸

Fines escalate with each violation:

First offense: $100
Second offense: $250 plus a mandatory distracted driving course
Third and later offenses: $500 plus the course and an insurance surcharge

The insurance surcharge is what makes repeat violations expensive over time, since it raises premiums for years beyond the fine.⁸

A separate law prohibits anything in or on the vehicle that interferes with your ability to operate it, and requires at least one hand on the wheel at all times.⁹

Seatbelts and Child Restraints

Everyone aged 13 and older must wear a seatbelt. The violation is a secondary offense, so an officer cannot pull you over for an unbuckled belt alone but can add the fine if you’re stopped for another reason.¹⁰

Children under 8 must ride in a federally approved child restraint unless they are taller than 57 inches. After age 8 or that height, they move out of the car seat but must still wear a seatbelt until age 13.¹¹ The state expects infants in rear-facing seats, toddlers in forward-facing seats, and older children in boosters until they meet the size threshold.¹²

Stopped School Buses

When a school bus flashes its red lights and extends its stop sign, every vehicle approaching from either direction must stop and remain stopped until the lights go off. The only exception is when the bus is on the opposite side of a divided highway with a physical barrier between you.

Penalties escalate quickly:

First offense: fine of at least $250
Second offense: $500 to $1,000 fine and six-month license revocation
Third or later offense: $1,000 to $2,000 fine and one-year license revocation

A second or later conviction triggers automatic license revocation with no stay pending appeal.¹³

Crashes: What You Must Do

If a crash results in any injury, any death, or property damage of more than $1,000 to any single vehicle or piece of property, you must file a Motor Vehicle Crash Operator Report with the RMV within five days. The only exception is physical incapacity.¹⁴ You must also stay at the scene and give your name, address, and registration number to the other parties.

Leaving the scene carries penalties that scale with harm:

Property damage only: $20 to $200 fine and up to two years in jail
Non-fatal injury: $500 to $1,000 fine and at least six months in jail
Death: $1,000 to $5,000 fine and at least one year of imprisonment, with no parole, probation, or reduction below one year

Courts cannot suspend the minimum sentence in a fatal case.¹⁵

The Move Over Law

When you approach a stationary emergency vehicle, highway maintenance truck, or recovery vehicle with flashing lights on a highway, slow to a safe speed. On roads with at least two lanes in your direction, also move to a lane farther from the stopped vehicle when traffic allows. The fine reaches $100.¹⁶

Operating Under the Influence (OUI)

Massachusetts uses OUI rather than DUI or DWI. The blood alcohol limit is 0.08% for drivers 21 and older, 0.04% for commercial drivers, and 0.02% for drivers under 21. Even below these limits, an officer’s observation of impaired driving can support a charge.

A first OUI conviction carries a $500 to $5,000 fine, up to two and a half years in jail, and a one-year license suspension. After three months, you can apply for a hardship license limited to work or school. A second offense raises the fine range to $600 to $10,000, imposes a mandatory 30 days in jail that cannot be reduced or suspended, and extends license revocation to two years. A third offense carries a mandatory 150 days in jail, fines of $1,000 to $15,000, and a possible state prison sentence of up to five years.¹⁷

Implied Consent and Refusing a Test

By driving in Massachusetts, you’ve consented to a chemical breath or blood test if arrested for OUI. Refusal triggers an automatic administrative license suspension that runs separately from any court penalty:

No prior OUI: 180 days
One prior: 3 years
Two prior: 5 years
Three or more prior: lifetime

The suspension is immediate. You have 15 days to request a hearing at the Boston (Haymarket) RMV, and the grounds are narrow: the officer lacked reasonable grounds, you were not placed under arrest, or you did not actually refuse.¹⁸

Ignition Interlock Devices

Repeat OUI offenders, and first-time offenders who blew 0.15% or higher and want a hardship license, must install an ignition interlock device that requires a clean breath sample to start the car. The minimum period for repeat offenders is two years, and the device must remain for an additional two years after full license reinstatement. Operators pay a $30 monthly administration fee on top of installation and maintenance.¹⁹

Required Auto Insurance

Massachusetts requires four types of coverage before you can register a vehicle. All four must be in place:

Bodily injury to others: at least $25,000 per person and $50,000 per accident, covering your liability for injuries to people outside your vehicle
Personal injury protection (PIP): medical expenses and up to 75% of lost wages for you, your passengers, and pedestrians, up to $8,000
Uninsured motorist bodily injury: at least $25,000 per person and $50,000 per accident, covering you if hit by an uninsured or hit-and-run driver
Property damage: at least $30,000 for damage you cause to another person’s property

Collision, comprehensive, and higher liability limits are optional.²⁰

Surcharge Points and License Suspensions

Massachusetts does not use traditional license points. The Safe Driver Insurance Plan (SDIP) instead assigns surcharge points that raise your insurance premiums:

Minor traffic violation: 2 points
Minor at-fault accident: 3 points
Major at-fault accident: 4 points
Major traffic violation: 5 points

A first minor, non-criminal violation is forgiven if you had no other violations in the previous five years. A “Clean in 3” provision reduces your surcharge points by 1 per incident when your most recent violation was at least three years ago and you have three or fewer incidents in the past five years.²¹

The RMV also tracks your driving record separately and can suspend your license for stacking violations:

Three speeding tickets in 12 months: 30-day suspension
Three surchargeable events in two years: suspension notice, with 90 days to complete a driver retraining course to prevent it from taking effect
Seven surchargeable events in three years: 60-day suspension
Three major violations or 12 total violations in five years: four-year suspension as a habitual traffic offender

The habitual offender designation is the one most drivers don’t see coming, since a pattern of moderate violations can produce a four-year suspension.²²

1
General Court of Massachusetts. Massachusetts Code Chapter 89 Section 8 – Right-of-Way at Intersecting Ways; Turning on Red Signals
2
General Court of Massachusetts. Massachusetts Code Chapter 90 Section 14B – Uniform Stopping and Turning Signals on Ways
3
General Court of Massachusetts. Massachusetts Code Chapter 89 Section 11 – Marked Crosswalks; Yielding Right of Way to Pedestrians; Penalty
4
General Court of Massachusetts. Massachusetts Code Chapter 90 Section 17 – Speed Regulations
5
Mass.gov. Speed Limits in Thickly Settled or Business Districts
6
General Court of Massachusetts. Massachusetts Code Chapter 89 Section 4A – Driving Vehicles in a Single Lane; Motorcycles, Riding and Passing
7
General Court of Massachusetts. Massachusetts Code Chapter 89 Section 4B – Driving in Lane Nearest Right Side of Way
8
Mass.gov. Hands-Free Law
9
General Court of Massachusetts. Massachusetts Code Chapter 90 Section 13 – Operation of Motor Vehicles; Equipment
10
General Court of Massachusetts. Massachusetts Code Chapter 90 Section 13A – Seat Belt Use Required; Exemptions; Penalty
11
General Court of Massachusetts. Massachusetts Code Chapter 90 Section 7AA – Child Passenger Restraints; Fine
12
Mass.gov. Car Seat Laws in Massachusetts
13
General Court of Massachusetts. Massachusetts Code Chapter 90 Section 14 – Approaching School Buses; Penalties
14
Mass.gov. Report a Motor Vehicle Crash
15
General Court of Massachusetts. Massachusetts Code Chapter 90 Section 24 – Driving Under the Influence; Reckless Driving; Failure to Stop After Collision
16
General Court of Massachusetts. Massachusetts Code Chapter 89 Section 7C – Lane Change Upon Approaching Stationary Emergency Response Vehicle
17
General Court of Massachusetts. Massachusetts Code Chapter 90 Section 24 – Driving While Under Influence; Reckless Driving; Failure to Stop After Collision
18
Mass.gov. Alcohol and Drug Suspensions for Over 21 Years of Age
19
Mass.gov. Ignition Interlock Device Program
20
Mass.gov. Basics of Auto Insurance
21
Mass.gov. Safe Driver Insurance Plan (SDIP)
22
Mass.gov. Suspensions From Multiple Offenses