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Does Cruise Control Increase Crash Risk? What the Evidence Shows

Evidence links some cruise-control use with speeding and with contributing circumstances in selected crashes, but it does not prove a universal increase in crash risk.
Entry826 Date Time4 min MechanicCarCody Team

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Not universally, and the evidence does not prove that cruise control itself causes more crashes. Some studies link cruise-control use with speeding or identify it as a contributing factor in particular crashes. But the findings differ by system and measure: a recent field study tracked speeding with adaptive cruise control, while a crash-case analysis examined selected crashes involving conventional cruise control. Neither establishes a general increase in crash risk for every driver or road.

What the evidence says—and what it does not

The headline claim needs qualification. “Cruise control” can mean conventional cruise control, which maintains a driver-set speed; adaptive cruise control (ACC), which can adjust speed to traffic ahead; or ACC used with lane-centering assistance. These systems are not interchangeable, and lane-centering assistance does not make a vehicle self-driving. The evidence also measures different outcomes: speeding behavior, a system’s contribution in selected crashes, or crash-rate associations reported in a review.

A field study found more speeding with ACC

In a 2022 field study, Monfort and colleagues recruited 40 licensed adult drivers in the Boston, Massachusetts, metro area. Participants drove either a 2017 Volvo S90 or a 2016 Range Rover Evoque for about four weeks. Drivers were more likely to speed during ACC use than during manual-control periods: 95% versus 77%. With ACC and lane centering, the comparison was 96% versus 77%. Among trips above the posted limit, drivers also traveled slightly faster with these systems engaged; differences were most pronounced on limited-access roads with a 55 mph limit. The study measured speeding, not crashes, so it does not show that ACC caused more collisions. Its authors said a net safety assessment should account for more frequent and elevated speeding. Monfort et al., 2022 field study

A crash-case analysis identified possible contributing circumstances

Monash University Accident Research Centre’s 2023 ECIS Report 4 examined 400 crash-involved cases. Cruise control was active for 17 case drivers, and investigators considered its use contributory to crash occurrence or injury severity in 13 cases—3.3% of all cases. All but two of those crashes involved a lane departure. The report identified circumstances including a set speed above the limit despite route advisory signs, cruise control use while a driver was drowsy or fell asleep, and incomplete attention to driving. This selected case analysis does not estimate how much cruise control changes crash risk across all drivers or trips, nor does it say the system alone caused those crashes. Monash University Accident Research Centre, ECIS Report 4

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A review reported higher crash-rate associations, but the abstract leaves important questions open

A 2025 review article abstract reports associations with increased crash rates of 8% for ACC and 12% for cruise control. These are the review’s reported associations, not proof of causal effects. The abstract available here does not provide enough detail to assess the underlying studies, how the rates were measured, or how broadly the results apply. 2025 review abstract

Why the system and outcome matter

Evidence or system What it examined What the result supports What it does not establish
Conventional cruise control in the Monash report 400 selected crash-involved cases Cruise control was considered contributory in 13 cases, in specific circumstances such as excess speed, drowsiness, or inattention. Population-wide crash odds or a universal causal effect.
ACC in the 2022 field study Speeding behavior during driving periods Speeding was more common during ACC use than during manual-control periods among the 40 participants studied. Crash frequency or severity.
ACC with lane centering in the 2022 field study Speeding behavior during driving periods Speeding was more common than during manual-control periods among the participants studied. Crash frequency or proof that the combined system caused crashes.
ACC and cruise control in the 2025 review abstract Crash-rate associations reported by the review The abstract reports associations of +8% for ACC and +12% for cruise control. Causation, or a result whose underlying measures and generalizability can be assessed from the abstract alone.

Differences in driver behavior, road type, speed limits, and the outcome being measured matter. A finding about speeding cannot be treated as a crash-rate result, and a contribution identified in selected crash cases cannot be read as the odds of crashing for every cruise-control user.

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Can cruise control lead to speeding, inattention, or falling asleep?

The evidence supports concern about these behaviors in particular conditions, not the claim that cruise control inevitably produces them. The field study found more speeding during ACC use among its participants. The Monash report identified excess set speed, drowsiness or falling asleep, and incomplete attention among circumstances in which cruise control was considered contributory in selected crashes. These findings make driver behavior and the driving environment central to interpreting risk.

Driver-assistance systems do not remove the driver’s responsibility to monitor the road. The UK government’s 2026 summary of an evidence review says ADAS can improve comfort, convenience, and safety, while examining concerns about over-reliance, reduced attention, and awareness of driver responsibilities. It states: “Newer ADAS (advanced driver assistance systems) technologies can control steering and speed for longer periods than currently available driver‑assistance features, but will still require the driver to stay alert and responsible.” UK government evidence-review summary

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IIHS likewise describes ACC and lane-centering systems as features that leave drivers sharing responsibility, and notes concerns about false confidence and over-trust. They should not be treated as self-driving. IIHS on ACC and lane-centering systems

Quick Recap

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How to use cruise control without treating it as a substitute for driving

  • Set a speed that is appropriate for the posted limit and current conditions; do not assume the system will account for every advisory sign, hazard, or change in road conditions.
  • Stay alert and keep monitoring traffic and the road, even when ACC is adjusting speed or lane-centering assistance is active.
  • Do not use cruise control when drowsy. If you feel sleepy, stop somewhere safe rather than relying on the system to keep you on course.
  • Follow the vehicle maker’s instructions for the specific system in your car. ACC and lane-centering capabilities vary, and neither transfers responsibility for responding to hazards away from the driver.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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