Idaho Car Crash Statistics

Idaho is among the safest states for motorists in the United States. The state was ranked 14th of the states with the nation's lowest fatal crashes. With Idaho ranked ninth of the states with the best road infrastructure in the US, road safety has become one of the significant concerns that the state has to address. Distracted driving was among the major causes of car crashes in the state. Additionally, speeding and impaired driving also seem to play a considerable role in the number of fatal accidents that occur along the state’s roads.

The rate of crashes also increases rapidly during the winter due to snow storms and foggy weather that reduce visibility along most streets in the mountains and forested areas.

Fatal Crashes
244
Deaths
271
Deaths per 100,000 population
14.2
Deaths per 100 million vehicle miles traveled
1.40
Crash Types
271
Single-vehicle
144
Multiple-vehicle
127
Alcohol Involvement
143killed
Drivers killed with known BAC results
77
Deaths by Road User
Rural vs. Urban Crashes
Source: IIHS, NHTSA

The rate of crashes also increases rapidly during the winter due to snow storms and foggy weather that reduce visibility along most streets in the mountains and forested areas.

Number of Fatal Crashes

Number of Serious Injury Crashes

Top 5 Most Dangerous Roads in Idaho

While most of Idaho's roadways have seen several collisions, some are notorious for having many collision fatalities. The following highways are among the riskiest in Idaho:

95
US-95 is Idaho primary north–south highway
18 Fatalities/year
84
I-84 from Onatrio to Sublett Range
13 Fatalities/year
55
SR-55 from Owyhee County to Bonners Ferry
10 Fatalities/year
20
US-20 from Parma to Yellowstone National Park
9 Fatalities/year
26
US-26 from Snake River to Alpine
6 Fatalities/year

Key Car Crash Statistics in Idaho

  1. In 2021, Idaho had 273 fatalities, which was the highest number of crash fatalities between 2018 and 2022.
  2. 2021 also had the highest number of fatal crashes between 2018 and 2022, with 246 fatal crashes throughout the year. The total number of crashes that year was 27,549.
  3. The state recorded 1,729 impaired driving crashes in 2021, which was the highest of all the years between 2017 and 2021. Additionally, it also had the highest number of fatalities (108) caused by alcohol-related crashes.
  4. In 2022, 19,024 traffic crashes resulted in property damage above $1,500, the highest between 2018 and 2022.
  5. Ada County is the most dangerous county for motorists, with over 5,530 crashes in 2021.

What Should I Do After a Car Accident in Idaho?

In case of an accident, drivers should follow these procedures to prevent further injury, loss of life, and property damage:

1
Try moving away from significant traffic

After a crash, drivers should safely move their vehicle to a low-traffic lane or the side of the road. High-traffic interstate highways increase the likelihood of multi-vehicle collisions due to traffic congestion and high-speed driving.

2
Turn on the hazard lights and use flares and cones

Drivers should turn on their vehicle's hazard lights, signaling potential danger to approaching drivers. Drivers should consider using roadside flares, cones, or flags to improve visibility, especially during the night or stormy weather. Drivers should, however, position traffic control devices at a safe distance from the crash to allow for adequate reaction time for passing motorists.

3
Remain at the scene

Idaho law forbids anyone involved in a traffic collision from leaving. Drivers should stay at the crash site until instructed otherwise.

4
Check for injury

Individuals should see if anyone was injured in the crash. If anyone is seriously injured, people should not move the patient and instead contact a medical emergency team for assistance.

5
Notify local law enforcement

Drivers must immediately report any crash that causes injury, death, or property damage exceeding $1,500. Individuals should give an accurate account of the event as they remember it.

6
Exchange information

Idaho law requires all parties involved in a traffic collision to exchange information. These include names, addresses, insurance information, license numbers, and vehicle registrations. If the driver does not own the vehicle, they should provide the owner's name and address.

7
Take images for documentation

Drivers should take photos of the crash if possible. The photos could help determine the accident's cause and the extent of the damage. Photos can also show pre-existing damage to the car and act as evidence in legal proceedings or insurance claims.

8
Seek help from an attorney

To ensure that their rights are not violated, drivers should seek the assistance of an attorney.

9
Notify the insurance company

If an individual wishes to file an insurance claim for reimbursement, they should contact their insurance carrier.

10
Keep a record of the incident

Drivers should retain vital records in case of legal action. These records consist of police statements, reports, and insurance information.

Idaho Driving Laws and Facts

Impaired Driving

The state requires drivers aged 21 and older to have a Blood Alcohol Concentration (BAC) lower than .08%.

Individuals under 21 must have a BAC lower than .02%.

Commercial drivers must have a BAC lower than .04%.

Seatbelt Law

All drivers and front-seat passengers in a vehicle are legally required to wear seat belts.

Infants and toddlers under six must use a booster or child passenger safety seat.

Children between seven and nine should be in a booster seat or restrained while the car moves.

Hands-Free Law

The State prohibits using handheld devices while a driver operates a vehicle, even when the car is stopped in traffic or at a stop sign or stop light.

Drivers can use hands-free devices to answer calls while operating a vehicle.

Teenage Driving Laws

Individuals seeking a driver's license must be at least 15 years old within the state.

Minor drivers must complete a state-approved course and 30 hours of classroom instruction. Likewise, minor drivers should have 12 hours of behind-the-wheel training with six hours of supervised driving.

The state requires minor drivers to have 50 hours of driving and 10 hours of nighttime driving under the supervision of an adult 21 years or older with a valid driving license.

The supervisor is the only individual allowed to sit in the front passenger seat. All other occupants are required to sit in the back.

Move Over Law

In the State of Idaho, all motorists on any road or highway are legally required to safely move to the adjacent lane when approaching a stationary police car or emergency vehicle with its warning lights actively flashing.

If it is unsafe to move over to another lane, drivers must slow down below the speed limit, maintain a safe distance, and pass the vehicle cautiously.

Lane Camping

Within multi-lane highways in the state, the leftmost lane is designated solely to overtake or pass slower vehicles proceeding in the same direction. Vehicles utilizing this lane are expected to maintain a speed that demonstrably exceeds traffic flow in the rightmost lane.

Vehicle Registration and Insurance

In the state, the operation of all vehicles requires minimum liability insurance coverage. This financial safeguard protects drivers in the event of an accident deemed their responsibility, mitigating potential liabilities after the accident.

Vehicles without insurance coverage for two consecutive months risk having their registration suspended.

Motorcyclists

Riders under 18 must wear helmets when operating a motorcycle, UTV, or ATV on the road.

Idaho Weird Traffic Laws

Though Idaho has most of the same standard traffic laws as the other states, it also has unique regulations. Here are some of these unusual laws and regulations:

  1. Bicyclist yield sign. Bicyclists in Idaho are allowed to treat stop signs as yield signs. They must check the road and see if it is clear instead of stopping at every sign. Additionally, cyclists must stop at a red light but do not have to wait until the light turns green to proceed.
  2. Make way for livestock. Drivers are responsible for any injury to animals they might hit in the state. In case of injury, the driver shall pay for treatment or the estimated cost of livestock if it dies.
  3. Continue if the light is yellow. Idaho is one of the few states with a permissive yellow traffic light. That means that individuals can continue driving if they reach an intersection and the light is yellow before turning red. However, that does not mean drivers should accelerate at an intersection.
  4. Making a left turn at a red light. In Idaho, motorists can turn left on a one-way road as long as the road is clear, even if the traffic light is red.
  5. Driving slow on the road. The state prohibits vehicle operators from driving too slowly, affecting the normal traffic flow on the road.