Specifications

The Extended Stop Arm Exceeds the Federal Standard 571.131

School Bus Pedestrian Safety Devices.

Overview -The Extended Stop Arm provides a physical presence to stop vehicles from passing stopped school buses. This has a break-away feature such that if struck at a significant speed will shear the bolt connections and the electrical connection. This is a patented product #US 9,245,465 B1. The arm takes 5 seconds to deploy or retract for electric, and 4 seconds for air. Should the electric arm be opened into another object, or the side of another bus, it will automatically retract and reset after 20 seconds, protecting both the Extended Stop Arm and the Linear Actuator.

The Extended Stop Arm is powder coated aluminum or steel, vinyl, fasteners are all stainless steel. Electrical wiring is all U.V. protected cabling. It is covered by our 5-year warranty, which is backed up by individual product warranties of the contracted manufacturers.

Lights - are independently plugged into the wiring harness. Meaning any light can be replaced individually. They are all bright 9 LED in a sealed housing US FMVSS 108 vehicle lighting compliant. The lights stay on for 2 extra seconds when closing to allow for the arm to close against the side of the bus.

Sign - is current to the Federal specifications for the Stop sign in both size and specific quality of lettering and reflectivity.

Aluminum break-away frame - This is powder coated aluminum built to our specifications. Total weight of frame, lights, and sign is 7 pounds.

Steel support square frame - This is powder coated steel and has the strength to support the break-away aluminum frame. This allows shearing of the #8 nylon 5/16” bolts.

Steel Hinge support - This is designed to support both the original sign, and our new steel frame, as well as the aluminum break-away sign. This is comprised of a heavy-duty steel vertical, and horizontal member which supports the linear actuator as well. Both the vertical and horizontal pieces’ have ¾” X ½” bronze iolite bushings. In addition, the hinge piece itself has a ½” stainless steel rod as the hinge which operates within the bronze bushings. The fasteners are all stainless steel including the studs on this hinge piece.

Wiring harness - for the lights is attached using a harsh environment waterproof ATM series sealed connector for the weather seal at the breakaway point.

Electronic Control Unit - This was developed specifically for us. It controls the flash, and strobe of the lights, as well as the Linear Actuator or pneumatic cylinder move the arm. This requires a 15-amp supply line fuse from the fuse box, and to be connected to the control wire for the existing Stop Arm lights. The unit uses very low current.

Linear Actuator - This is a 100# thrust unit, with an IP66 rating operating at a temperature range of -10 F to 110 F  providing consistent operations of the Extended Stop Arm. This has a 400# static load for keeping the arm against the side of the bus.

Air/Pneumatic Double Acting Cylinder – This is a 100lbs of thrust unit. It has all stainless-steel parts that uses the bus compressor air to power in and out. The air pressure securely holds in the Extended Stop Arm when the bus is running. A check valve keeps the arm secure when the bus is off.  An electric control unit also controls the air cylinder. 

Length – The Extended Stop Arm is available in two lengths: a 4.5’ and 6.5’ total length. The shorter version can be used on routes with 1 lane or in parking lots.

Contact JM Transportation Solutions for more information at sales@extendedstoparm.com.