Skip Ribbon Commands
Skip to main content
Safety Recommendation Details

Safety Recommendation H-17-047
Synopsis: On October 23, 2016, about 5:16 a.m., a motorcoach ran into the rear of a stopped combination vehicle in the westbound lanes of Interstate 10 (I-10), outside Palm Springs, California. About 9 minutes before the crash, the California Highway Patrol (CHP) initiated a traffic break for both eastbound and westbound traffic on I-10 in support of utility work being performed west of the crash location. At that time, a combination vehicle was traveling westbound on I-10. It stopped when it reached the traffic queue that had formed as a result of the break. After a break that lasted about 7 minutes, the CHP released westbound traffic. The combination vehicle remained stopped and was stationary as westbound traffic resumed normal flow. About 2 minutes after the traffic break ended, a 47-passenger motorcoach was traveling on westbound I-10 in the lane in which the combination vehicle was stopped. The motorcoach, which was occupied by a driver and 42 passengers, struck the rear of the combination vehicle’s semitrailer. As a result of the crash, the bus driver and 12 passengers died, and the truck driver and 30 passengers were injured. The crash investigation focused on the following safety issues: traffic break policies, obstructive sleep apnea and diabetes in commercial vehicle drivers, oversight of commercial vehicle drivers and carriers, emergency egress, and collision avoidance systems. The National Transportation Safety Board (NTSB) makes new safety recommendations to the Federal Highway Administration, Federal Motor Carrier Safety Administration (FMCSA), Tri-State Collision LLC, American Trucking Associations, Owner-Operator Independent Drivers Association, Commercial Vehicle Safety Alliance, International Association of Chiefs of Police, and National Sheriffs’ Association. The NTSB reiterates recommendations to the FMCSA, the National Highway Traffic Safety Administration, and commercial vehicle manufacturers. The NTSB reiterates and reclassifies one recommendation to the FMCSA.
Recommendation: TO THE FEDERAL HIGHWAY ADMINISTRATION: During your next regular process review with each state department of transportation, ask about the state’s policy for conducting traffic breaks and, if necessary, urge the state to adopt a policy that includes procedures similar to those used in other temporary traffic control operations, such as (1) providing drivers with advance notice of slowed or stopped traffic, and (2) monitoring the formation and dispersal of traffic queues. In addition, the implementation of the policy should be documented in every encroachment permit involving a traffic break in the state.
Original recommendation transmittal letter: PDF
Overall Status: Open - Acceptable Response
Mode: Highway
Location: Palm Springs, CA, United States
Is Reiterated: No
Is Hazmat: No
Accident #: HWY17MH005
Accident Reports: Preliminary Report: HWY17MH005Motorcoach Collision With Combination Vehicle After Traffic Break on Interstate 10, Palm Springs, California
Report #: HAR-17-04
Accident Date: 10/23/2016
Issue Date: 11/21/2017
Date Closed:
Addressee(s) and Addressee Status: FHWA (Open - Acceptable Response)

Safety Recommendation History
From: NTSB
Date: 9/13/2018
Response: We note that, in addition to the technical advisory you are developing in response to Safety Recommendation H-17-46, you also plan to publish a traffic break and rolling roadblock fact sheet to help the states manage their work zones and ensure they are complying with process review requirements. Pending completion of these efforts and our review of the resulting documents, Safety Recommendation H-17-47 is classified OPEN--ACCEPTABLE RESPONSE.

From: FHWA
Date: 4/6/2018
Response: -From Brandye L. Hendrickson, Acting Administrator: The process review is an opportunity to assess the Agency's overall work zone management efforts to see what is working well, what is not working well and may need adjustments, and to determine how to address any new work zone management challenges that have developed. To help in this effort, FHW A plans to publish a fact sheet on traffic breaks/rolling roadblocks in addition to issuing the technical advisory mentioned in Recommendation H-17-46.

From: NTSB
Date: 11/21/2017
Response: On October 31, 2017, the NTSB adopted its report Motorcoach Collision With Combination Vehicle After Traffic Break on Interstate 10, Palm Springs, California, October 23, 2016, NTSB/HAR-17/04. The details of this accident investigation and the resulting safety recommendations may be found in the attached report, which can also be accessed at Among the Safety Recommendations are three issued to the Federal Highway Administration, which can be found on page 51 of the report. The NTSB is vitally interested in these recommendations because they are designed to prevent accidents and save lives. We would appreciate a response within 90 days, detailing the actions you have taken or intend to take to implement these recommendations.