One reader recently asked about speeding when taking exits on highways and interstates. “What is the legal speed limit on an ...

Freeway signs must endure a lot — including nearly constant sunshine. A view looking north along the 405 Freeway in Los Angeles in 2020. (Photo by Dean Musgrove, Los Angeles Daily News) ...

Freeway signs must endure a lot — including nearly constant sunshine. A view looking north along the 405 Freeway in Los Angeles in 2020. (Photo by Dean Musgrove, Los Angeles Daily News) ...

Freeway signs must endure a lot — including nearly constant sunshine. A view looking north along the 405 Freeway in Los Angeles in 2020. (Photo by Dean Musgrove, Los Angeles Daily News) ...

Freeway signs must endure a lot — including nearly constant sunshine. A view looking north along the 405 Freeway in Los Angeles in 2020. (Photo by Dean Musgrove, Los Angeles Daily News) ...

Freeway signs must endure a lot — including nearly constant sunshine. A view looking north along the 405 Freeway in Los Angeles in 2020. (Photo by Dean Musgrove, Los Angeles Daily News) ...

Otherwise, excessive removal could damage the original sign underneath. “Caltrans is working on replacing these signs, with several forthcoming projects in various stages of planning or design that ...