Very little danger of a BLEVE when you have arrived, but remember your own safety first, a fire usually means it's unsafe. Not just because of the fuel tanks, but also the dangerous gasses/fumes, exploding tires, exploding hydraulics, etc.

As somebody else mentioned, most (if not all) tanks are equipped with a overpressure valve, which however does not mean it's safe to be around. When the valve blows, you will get a big fire ball coming out the valve, which then turns in to the blowtorch effect. Or it will just shoot occasional fireballs, depending on the valve and pressure.

And ofcorse with any safety system, the valve can also fail to operate. HIGHLY unlikely, though.

in the end, it's all about judgement and experians. Always check your own safety. When you spot a possible danger, than retreat and let the right people do there job. It's not just fuel tanks which can be dangerous, there are plenty of other possible dangerous things somebody can be carring in there trunk.