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Friday was bittersweet in the WTOP newsroom as our very own traffic reporter Bob Immler celebrated his last day before retiring after over four decades in the traffic business.

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Immler celebrated the day surrounded by his WTOP colleagues, anchoring traffic reports and with his favorite bribe — pizza!

Immler started reporting in 1982 in Baltimore as a mobile unit. This was long before the days of traffic cameras, Google Maps and other digital tools. His work was hands-on, intuitive and deeply roo

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