A vehicle of the Suthra Punjab project caught fire on Waris Khan Murree Road in Rawalpindi, reported the 24NewsHD TV channel on Sunday.
On receiving information, rescue personnel reached the spot and extinguished the fire.
According to the rescue spokesperson, the fire was probably caused by a short circuit in the vehicle.
Sources said several incidents of RWMC vehicles catching fire and brake failure have occurred before this.
As many as 245 RWMC vehicles have an annual contract of Rs380 million for maintenance.
Reporter: Irshad Qureshi