§571.227. Standard No. 227; Bus rollover structural integrity. — Inbound Citations

(d) S6.1.5 While raising the platform, the tilting platform roll angle, measured at the outside of each wheel farthest from the pivot point, does not differ by more than one degree.

S6.1.6 The impact surface is horizontal, uniform, dry, and smooth concrete. The impact surface covers an area that is large enough to ensure that the vehicle does not strike beyond the impact surface edges.

S6.2 Vehicle preparation.

S6.2.1 The vehicle's tires are inflated to the manufacturer's recommended tire pressure.

S6.2.2 Test equipment may be attached securely to the bus structure such that the equipment does not break away from the bus structure from the time the tilting platform begins movement to after the vehicle comes to rest on the impact surface.

S6.2.3 Fixed seats may be removed or adjustable seats repositioned for the installation of test equipment in the survival space. Ballast of any weight up to the weight of the removed seat and 68 kg per designated seating position may be secured to the bus floor. The ballasts are not placed farther forward than the forward most point of the vehicle seat immediately in front of the removed seat, and the ballasts are not placed farther rearward than the rear most point of the vehicle seat immediately behind the removed seat.

S6.2.4 The fuel tank is filled to any level from 90 to 95 percent of capacity. All other vehicle fluids are filled to any level from 90 to 95 percent of capacity. Fluids may be substituted if the weight of the original fluid is maintained.

S6.2.5 Ballasting. The vehicle is loaded to any weight up to and including the GVWR. Up to 68 kilograms (150 pounds) of ballast is installed at all designated seating positions that are equipped with occupant restraints. The ballast is placed on the top of each seat cushion and attached securely to the seat frame such that it does not break away from the seat from the time the tilting platform begins movement to after the vehicle comes to rest on the impact surface.

S7 Rollover structural integrity test procedure. Each vehicle shall meet the requirements of S5 when prepared as specified in S6.2 and tested in accordance with the procedures set forth in paragraphs (a) through (f) of this S7.

(d) S6.1.5 While raising the platform, the tilting platform roll angle, measured at the outside of each wheel farthest from the pivot point, does not differ by more than one degree.

S6.1.6 The impact surface is horizontal, uniform, dry, and smooth concrete. The impact surface covers an area that is large enough to ensure that the vehicle does not strike beyond the impact surface edges.

S6.2 Vehicle preparation.

S6.2.1 The vehicle's tires are inflated to the manufacturer's recommended tire pressure.

S6.2.2 Test equipment may be attached securely to the bus structure such that the equipment does not break away from the bus structure from the time the tilting platform begins movement to after the vehicle comes to rest on the impact surface.

S6.2.3 Fixed seats may be removed or adjustable seats repositioned for the installation of test equipment in the survival space. Ballast of any weight up to the weight of the removed seat and 68 kg per designated seating position may be secured to the bus floor. The ballasts are not placed farther forward than the forward most point of the vehicle seat immediately in front of the removed seat, and the ballasts are not placed farther rearward than the rear most point of the vehicle seat immediately behind the removed seat.

S6.2.4 The fuel tank is filled to any level from 90 to 95 percent of capacity. All other vehicle fluids are filled to any level from 90 to 95 percent of capacity. Fluids may be substituted if the weight of the original fluid is maintained.

S6.2.5 Ballasting. The vehicle is loaded to any weight up to and including the GVWR. Up to 68 kilograms (150 pounds) of ballast is installed at all designated seating positions that are equipped with occupant restraints. The ballast is placed on the top of each seat cushion and attached securely to the seat frame such that it does not break away from the seat from the time the tilting platform begins movement to after the vehicle comes to rest on the impact surface.

S7 Rollover structural integrity test procedure. Each vehicle shall meet the requirements of S5 when prepared as specified in S6.2 and tested in accordance with the procedures set forth in paragraphs (a) through (f) of this S7.

(d) S6.1.5 While raising the platform, the tilting platform roll angle, measured at the outside of each wheel farthest from the pivot point, does not differ by more than one degree.

S6.1.6 The impact surface is horizontal, uniform, dry, and smooth concrete. The impact surface covers an area that is large enough to ensure that the vehicle does not strike beyond the impact surface edges.

S6.2 Vehicle preparation.

S6.2.1 The vehicle's tires are inflated to the manufacturer's recommended tire pressure.

S6.2.2 Test equipment may be attached securely to the bus structure such that the equipment does not break away from the bus structure from the time the tilting platform begins movement to after the vehicle comes to rest on the impact surface.

S6.2.3 Fixed seats may be removed or adjustable seats repositioned for the installation of test equipment in the survival space. Ballast of any weight up to the weight of the removed seat and 68 kg per designated seating position may be secured to the bus floor. The ballasts are not placed farther forward than the forward most point of the vehicle seat immediately in front of the removed seat, and the ballasts are not placed farther rearward than the rear most point of the vehicle seat immediately behind the removed seat.

S6.2.4 The fuel tank is filled to any level from 90 to 95 percent of capacity. All other vehicle fluids are filled to any level from 90 to 95 percent of capacity. Fluids may be substituted if the weight of the original fluid is maintained.

S6.2.5 Ballasting. The vehicle is loaded to any weight up to and including the GVWR. Up to 68 kilograms (150 pounds) of ballast is installed at all designated seating positions that are equipped with occupant restraints. The ballast is placed on the top of each seat cushion and attached securely to the seat frame such that it does not break away from the seat from the time the tilting platform begins movement to after the vehicle comes to rest on the impact surface.

S7 Rollover structural integrity test procedure. Each vehicle shall meet the requirements of S5 when prepared as specified in S6.2 and tested in accordance with the procedures set forth in paragraphs (a) through (f) of this S7.

(d) S6.1.5 While raising the platform, the tilting platform roll angle, measured at the outside of each wheel farthest from the pivot point, does not differ by more than one degree.

S6.1.6 The impact surface is horizontal, uniform, dry, and smooth concrete. The impact surface covers an area that is large enough to ensure that the vehicle does not strike beyond the impact surface edges.

S6.2 Vehicle preparation.

S6.2.1 The vehicle's tires are inflated to the manufacturer's recommended tire pressure.

S6.2.2 Test equipment may be attached securely to the bus structure such that the equipment does not break away from the bus structure from the time the tilting platform begins movement to after the vehicle comes to rest on the impact surface.

S6.2.3 Fixed seats may be removed or adjustable seats repositioned for the installation of test equipment in the survival space. Ballast of any weight up to the weight of the removed seat and 68 kg per designated seating position may be secured to the bus floor. The ballasts are not placed farther forward than the forward most point of the vehicle seat immediately in front of the removed seat, and the ballasts are not placed farther rearward than the rear most point of the vehicle seat immediately behind the removed seat.

S6.2.4 The fuel tank is filled to any level from 90 to 95 percent of capacity. All other vehicle fluids are filled to any level from 90 to 95 percent of capacity. Fluids may be substituted if the weight of the original fluid is maintained.

S6.2.5 Ballasting. The vehicle is loaded to any weight up to and including the GVWR. Up to 68 kilograms (150 pounds) of ballast is installed at all designated seating positions that are equipped with occupant restraints. The ballast is placed on the top of each seat cushion and attached securely to the seat frame such that it does not break away from the seat from the time the tilting platform begins movement to after the vehicle comes to rest on the impact surface.

S7 Rollover structural integrity test procedure. Each vehicle shall meet the requirements of S5 when prepared as specified in S6.2 and tested in accordance with the procedures set forth in paragraphs (a) through (f) of this S7.

(d) S6.1.5 While raising the platform, the tilting platform roll angle, measured at the outside of each wheel farthest from the pivot point, does not differ by more than one degree.

S6.1.6 The impact surface is horizontal, uniform, dry, and smooth concrete. The impact surface covers an area that is large enough to ensure that the vehicle does not strike beyond the impact surface edges.

S6.2 Vehicle preparation.

S6.2.1 The vehicle's tires are inflated to the manufacturer's recommended tire pressure.

S6.2.2 Test equipment may be attached securely to the bus structure such that the equipment does not break away from the bus structure from the time the tilting platform begins movement to after the vehicle comes to rest on the impact surface.

S6.2.3 Fixed seats may be removed or adjustable seats repositioned for the installation of test equipment in the survival space. Ballast of any weight up to the weight of the removed seat and 68 kg per designated seating position may be secured to the bus floor. The ballasts are not placed farther forward than the forward most point of the vehicle seat immediately in front of the removed seat, and the ballasts are not placed farther rearward than the rear most point of the vehicle seat immediately behind the removed seat.

S6.2.4 The fuel tank is filled to any level from 90 to 95 percent of capacity. All other vehicle fluids are filled to any level from 90 to 95 percent of capacity. Fluids may be substituted if the weight of the original fluid is maintained.

S6.2.5 Ballasting. The vehicle is loaded to any weight up to and including the GVWR. Up to 68 kilograms (150 pounds) of ballast is installed at all designated seating positions that are equipped with occupant restraints. The ballast is placed on the top of each seat cushion and attached securely to the seat frame such that it does not break away from the seat from the time the tilting platform begins movement to after the vehicle comes to rest on the impact surface.

S7 Rollover structural integrity test procedure. Each vehicle shall meet the requirements of S5 when prepared as specified in S6.2 and tested in accordance with the procedures set forth in paragraphs (a) through (f) of this S7.

(d) S6.1.5 While raising the platform, the tilting platform roll angle, measured at the outside of each wheel farthest from the pivot point, does not differ by more than one degree.

S6.1.6 The impact surface is horizontal, uniform, dry, and smooth concrete. The impact surface covers an area that is large enough to ensure that the vehicle does not strike beyond the impact surface edges.

S6.2 Vehicle preparation.

S6.2.1 The vehicle's tires are inflated to the manufacturer's recommended tire pressure.

S6.2.2 Test equipment may be attached securely to the bus structure such that the equipment does not break away from the bus structure from the time the tilting platform begins movement to after the vehicle comes to rest on the impact surface.

S6.2.3 Fixed seats may be removed or adjustable seats repositioned for the installation of test equipment in the survival space. Ballast of any weight up to the weight of the removed seat and 68 kg per designated seating position may be secured to the bus floor. The ballasts are not placed farther forward than the forward most point of the vehicle seat immediately in front of the removed seat, and the ballasts are not placed farther rearward than the rear most point of the vehicle seat immediately behind the removed seat.

S6.2.4 The fuel tank is filled to any level from 90 to 95 percent of capacity. All other vehicle fluids are filled to any level from 90 to 95 percent of capacity. Fluids may be substituted if the weight of the original fluid is maintained.

S6.2.5 Ballasting. The vehicle is loaded to any weight up to and including the GVWR. Up to 68 kilograms (150 pounds) of ballast is installed at all designated seating positions that are equipped with occupant restraints. The ballast is placed on the top of each seat cushion and attached securely to the seat frame such that it does not break away from the seat from the time the tilting platform begins movement to after the vehicle comes to rest on the impact surface.

S7 Rollover structural integrity test procedure. Each vehicle shall meet the requirements of S5 when prepared as specified in S6.2 and tested in accordance with the procedures set forth in paragraphs (a) through (f) of this S7.