PHILADELPHIA (KYW Newsradio) — PennDOT activated a new electronic speed control and driver warning network on Thursday along a 14-mile stretch of the Schuylkill Expressway.The digital network includes 72 speed limit and detection and warning signs on eastbound and westbound I-76 between King of Prussia and the Roosevelt Expressway interchange in Philadelphia.Brad Rudolph, PennDOT deputy communications director, said the system marries and electronic message signs, which will display warnings about accidents and slowdowns on the busy highway.“They will react to real-time expressway and...…PHILADELPHIA (KYW Newsradio) — PennDOT activated a new electronic speed control and driver warning network on Thursday along a 14-mile stretch of the Schuylkill Expressway.The digital network includes 72 speed limit and detection and warning signs on eastbound and westbound I-76 between King of Prussia and the Roosevelt Expressway interchange in Philadelphia.Brad Rudolph, PennDOT deputy communications director, said the system marries and electronic message signs, which will display warnings about accidents and slowdowns on the busy highway.“They will react to real-time expressway and...WW…