The cost of a 10-mile trip on the 91 Freeway Express Lanes will drop 50 cents during seven time slots through the day starting Wednesday. Officials hope to encourage drivers to use the lanes. In another reflection of the weakening economy and the growing unemployment rate, the price of an Express Lane commute between Orange and Riverside counties is being reduced in a bid to attract more paying customers. Orange County transportation officials Thursday announced reductions to the tolls to enter the 91 Freeway Express Lanes, citing less traffic due to unemployment and the soured economy. Starting Wednesday, the cost...