A total of four recalls were announced for multiple Thomas Built Buses models with problems related to adjustable brake pedal arms, under-torqued fasteners, accelerator pedals and brake lines.

NHTSA Campaign IDs 09V461000, 09V458000, 09V462000 and 09V460000 were all announced on Wednesday, possibly affecting a total of over 15,000 vehicles model years 2006 to 2011.

One recall is caused by a Kongsberg adjustable brake arm that could loosen and “allow the arm to rotate around its shaft and swing in front of the accelerator pedal, reducing braking function,” according to NHTSA’s Office of Defects Investigation (ODI).

Daimler Trucks, Thomas’ parent company, is also recalling certain model years 2006 through 2011 MVP-EF school buses manufactured from Feb. 15, 2005 through Nov. 23, 2009, because “the accelerator pedal may become wedged against the scuff plate and become stuck in full throttle position.”

For more information contact NHTSA’s vehicle safety hotline at 888/327-4236 or visit the ODI Web site.