Most of the cameras that are mapped here look like AXIS camera models M2036-LE or P1455-LE. They are often mounted to the back of the horizontal traffic light poll just behind the traffic light, facing the rear of the car after it passes under the poll. Sometimes the cameras are mounted on a wood telephone poll, or a vertical, whatever it takes to make sure everyone passing by is recorded in a database for “up to a year” (per their website marketing).

https://www.google.com/maps/@39.9773121,-75.3366635,61a,15y,284.87h,107.13t/data=!3m7!1e1!3m5!1sqhVnRXdelXCL4IvFp92AFA!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D-17.129999999999995%26panoid%3DqhVnRXdelXCL4IvFp92AFA%26yaw%3D284.87!7i16384!8i8192

https://www.google.com/maps/@40.2797375,-75.299707,103a,15y,125.9h,122.3t/data=!3m7!1e1!3m5!1sIh8VyA6pRAlcopMyruGX8A!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D-32.30106738691309%26panoid%3DIh8VyA6pRAlcopMyruGX8A%26yaw%3D125.46670782969038!7i16384!8i8192

https://www.google.com/maps/@39.945738,-75.5858665,114a,15y,73.25h,104.71t/data=!3m7!1e1!3m5!1s8PIYu8QRpFcnBmcZLhIrJA!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D-14.707756505344122%26panoid%3D8PIYu8QRpFcnBmcZLhIrJA%26yaw%3D73.14747726545224!7i16384!8i8192