Final answer:
The question about load extension on a straight truck relates to transportation engineering and safety regulations, which can vary based on location. An accurate answer cannot be provided without the specific context of the applicable regulations.
Step-by-step explanation:
The question regarding how far loads on a straight truck may extend beyond the turn center deals with regulations and safety in transportation Engineering. Unfortunately, without specific legislative references, it's not possible to answer this question accurately. Transportation regulations can vary greatly by country, state, or municipality. Typically, there are strict rules regarding the permissible dimensions of vehicle loads to ensure safety on the road for both the driver of the truck and other road users. It is important for drivers to be familiar with these regulations to avoid penalties and maintain safety.