英语翻译1 – Object Overhang is published when an overhang of any

英语翻译
1 – Object Overhang is published when an overhang of any type is signposted on a supplemental sign in reality
2 – Risk of Grounding is published when the risk of grounding signage is signposted on a supplemental sign in reality.
3 - Animal Crossing is only coded when the animal crossing signage is present as supplemental sign in reality.
4 - Accident Hazard is only coded when the accident hazard signage is present as supplemental sign in reality.
这4条都是在说需要提醒司机需要注意公路上发生的某种事情.
其中3、4我看懂了,3说的是小心有动物横穿马路,4说的是小心前方发生了事故.1、2说的什么我没看懂,请帮忙翻一下1、2即可