How Safe is this CNG? If there's a collision from behind would it go up in flames?

With Nigerians' poor maintenance culture, I doubt they can use this.

RoadMozart:
How Safe is this CNG? If there's a collision from behind would it go up in flames?

It is heavier than LPG and very safe provided a quality cylinder is used

It has been in use in Benin City since 2007. It is safe .

https://www.youtube.com/watch?v=RFXZdJgP3Q0

Any conversion kit used should have oil being added as lubricant or it could easily affect the valves

RoadMozart:
How Safe is this CNG? If there's a collision from behind would it go up in flames?

No it won't.

CNG has a high ignition temperature, about 1,200 degrees Fahrenheit, compared with about 600 degrees Fahrenheit for gasoline. It also has a narrow range of flammability, that is, in concentrations in air below about 5 percent and above about 15 percent, natural gas will not burn. The high ignition temperature and limited flammability range make accidental ignition or combustion of CNG unlikely.

The fact that CNG is lighter than air further enhances its safety. Unlike other fuels such as diesel, petrol or LPG, which are heavier than air, and pools on the ground creating a fire hazard and potential pollution to waterways. Should a CNG leak occur, the gas will disperse rapidly upwards into the atmosphere and dissipate.

http://www.transecoenergy.com/Pages/cng-safety.html