World-wide manufacturer of propane delivery trucks, the bobtail truck and LP Gas vehicles of all types since 1999. Signature Truck Systems, LLC (STS) refurbishes bobtail trucks, builds new bulk trucks, service and crane trucks, cylinder trucks and transports. Our two locations perform all required tests, DOT inspections and R-Stamp repairs. STS multi-million dollar parts inventory can provide you with your necessary replacement part needs.