The option that might be the best way for the community to accomplish their goal is ask the local government to install a speed bump.
Explanation:
This might be the best option since a speed bump actually forces the speeding drivers to slow down if they want to avoid damages to their cars or getting injured themselves. A stop sign might not be as effective, unless the local government has an officer stand next to the sign to enforce it. This option is actually the ideal one since placing a sign is a lot cheaper than putting up a bump. However, reckless drivers tend to go past these signs since they do not represent a physical obstacle in their way.
