Driving west on Memorial toward the bridge there is a sudden change from the 40 MPH limit to 25 MPH ,with a police car sitting there just past the sign. There is a construction site way down the road but no warning of a reduced speed limit. There is a sign saying construction ahead but it is so far in advance and no mention of speed reduction to come that it catches lots of people unaware. Even though it’s a new traffic pattern, tickets are given and not warnings. Lots of tickets!