| Within 20 feet of the vehicle | |
| At the nozzle controlling the fuel flow | |
| Within arm`s reach of a fire extinguisher | |
| Within site of the nozzle |
| In your shirt or pants pocket | |
| In your trailer`s manifest bin | |
| In clear view on the dashboard | |
| The driver`s door pouch |
| If the chlorine is in liquid form | |
| If you`re carrying more than 100 gallons | |
| Always | |
| If the crossing is not protected by lights and crossing arms |