NEW YORK - (AP) - New York City has started to make changes to itsstreet signs to comply with new federal regulations.

The Federal Highway Administration says switching from uppercaseletters to a combination of upper and lower will improve safety. Itsays studies show motorists find it easier to read lower casesigns.

The city has 250,000 street signs. The city Department ofTransportation says it will have 11,000 changed by the end of thisfiscal year. It says the city already replaces about 8,000 signs ayear due to wear.

Municipalities across the country have until 2018 to make thechanges.

The federal regulations also require a change in street sign'sfont to a specially designed typeface called Clearview.