九色

The city of Scottsdale, Ariz. is installing digital speed limit signs that will be able to change limits as needed.

KSAZ-TV reported that Scottsdale officials plan to implement four adjustable signs later this month.

City Transportation Director Paul Basha says the signs will be programed to read either 35 mph or 25 mph during high traffic times.

Speed will be reduced between 9 p.m. and 3 a.m. on Fridays and Saturdays and during special events.

Some residents say they hope the signs don’t create speed traps.