3 ms·
> The system recently passed impact tests, where it prevented a 7,200kg lorry travelling at 32kph from penetrating less than five metres. That does not sound g
by njharman 7y ago
> The system recently passed impact tests, where it prevented a 7,200kg lorry travelling at 32kph from penetrating less than five metres.
That does not sound great. 32kph is slow and 5 meters! easily crosses entire sidewalk/roadway/whatever who wanted to keep vehicle out of.
- nrki 7y agoDesigned for congested/small UK streets where a lorry can't get up to significant speed. Also they are primarily deployed at the entrances to long walkways/bridges, where a lorry at speed would do significant damage to pedestrians. As these prevent a lorry from entering a walkway, 5m of rapidly-slowing "penetration" is acceptable.